diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index a65b93a5..2a1b44f9 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,15 @@
 Changelog
 ---------
 
+2.15.6 (unreleased)
++++++++++++++++++++
+
+Bug fixes:
+
+- Prevent ``TypeError`` when a non-collection is passed to a ``Schema`` with ``many=True``.
+  Instead, raise ``ValidationError`` with ``{'_schema': ['Invalid input type.']}`` (:issue:`906`).
+  
+
 2.15.5 (2018-09-15)
 +++++++++++++++++++
 
diff --git a/marshmallow/marshalling.py b/marshmallow/marshalling.py
index 9fcae405..7ab8713f 100644
--- a/marshmallow/marshalling.py
+++ b/marshmallow/marshalling.py
@@ -220,20 +220,26 @@ class Unmarshaller(ErrorStore):
         :return: A dictionary of the deserialized data.
         """
         if many and data is not None:
-            self._pending = True
-            ret = [self.deserialize(d, fields_dict, many=False,
-                        partial=partial, dict_class=dict_class,
-                        index=idx, index_errors=index_errors)
-                    for idx, d in enumerate(data)]
+            if not is_collection(data):
+                errors = self.get_errors(index=index)
+                self.error_field_names.append(SCHEMA)
+                errors[SCHEMA] = ['Invalid input type.']
+                ret = []
+            else:
+                self._pending = True
+                ret = [self.deserialize(d, fields_dict, many=False,
+                            partial=partial, dict_class=dict_class,
+                            index=idx, index_errors=index_errors)
+                        for idx, d in enumerate(data)]
 
-            self._pending = False
-            if self.errors:
-                raise ValidationError(
-                    self.errors,
-                    field_names=self.error_field_names,
-                    fields=self.error_fields,
-                    data=ret,
-                )
+                self._pending = False
+                if self.errors:
+                    raise ValidationError(
+                        self.errors,
+                        field_names=self.error_field_names,
+                        fields=self.error_fields,
+                        data=ret,
+                    )
             return ret
         if data is not None:
             partial_is_collection = is_collection(partial)

TypeError thrown with many=True on non-iterable types
With `3.0.0b13` this passes:

```python
class Sch(Schema):
    foo = fields.Str()

for p in [False, 1, 1.2]:
    with pytest.raises(TypeError):
        Sch(many=True).load(p)
```

I think `Schema.load()` should rather catch invalid types and raise `ValidationError`?
diff --git a/tests/test_schema.py b/tests/test_schema.py
index 7f0e8cb8..cccc7c91 100755
--- a/tests/test_schema.py
+++ b/tests/test_schema.py
@@ -279,6 +279,16 @@ def test_load_many():
     assert type(result.data[0]) == User
     assert result.data[0].name == 'Mick'
 
+# regression test for https://github.com/marshmallow-code/marshmallow/issues/906
+@pytest.mark.parametrize('val', (False, 1, 1.2, object(), {}, {'1': 2}, 'lol'))
+def test_load_many_invalid_input_type(val):
+    class Sch(Schema):
+        name = fields.Str()
+    with pytest.raises(ValidationError) as e:
+        Sch(strict=True, many=True).load(val)
+    assert e.value.messages == {'_schema': ['Invalid input type.']}
+    assert '_schema' in e.value.field_names
+
 def test_loads_returns_an_unmarshalresult(user):
     s = UserSchema()
     result = s.loads(json.dumps({'name': 'Monty'}))

pip install -e .[reco]
parse_log_pytest
requirements.txt
pytest pytest-cov pytest-xdist pytest-mock pytest-asyncio
3.9
dev-requirements.txt docs/requirements.txt
pytest --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning
alabaster @ git+https://github.com/sloria/alabaster.git@667b1b676c6bf7226db057f098ec826d84d3ae40
babel==2.17.0
cachetools==5.5.2
certifi==2025.1.31
chardet==5.2.0
charset-normalizer==3.4.1
colorama==0.4.6
coverage==7.8.0
distlib==0.3.9
docutils==0.20.1
exceptiongroup==1.2.2
execnet==2.1.1
filelock==3.18.0
flake8==2.4.1
idna==3.10
imagesize==1.4.1
importlib_metadata==8.6.1
iniconfig==2.1.0
invoke==0.21.0
Jinja2==3.1.6
MarkupSafe==3.0.2
-e git+https://github.com/marshmallow-code/marshmallow.git@43e07d734ca37bc1a9b473515dd448157504cfae#egg=marshmallow
mccabe==0.3.1
packaging==24.2
pep8==1.7.1
platformdirs==4.3.7
pluggy==1.5.0
py==1.11.0
pyflakes==0.8.1
Pygments==2.19.1
pyproject-api==1.9.0
pytest==8.3.5
pytest-asyncio==0.26.0
pytest-cov==6.0.0
pytest-mock==3.14.0
pytest-xdist==3.6.1
python-dateutil==2.9.0.post0
pytz==2025.2
requests==2.32.3
simplejson==3.20.1
six==1.17.0
snowballstemmer==2.2.0
Sphinx==7.2.6
sphinx-issues==1.1.0
sphinxcontrib-applehelp==2.0.0
sphinxcontrib-devhelp==2.0.0
sphinxcontrib-htmlhelp==2.1.0
sphinxcontrib-jsmath==1.0.1
sphinxcontrib-qthelp==2.0.0
sphinxcontrib-serializinghtml==2.0.0
tomli==2.2.1
tox==4.25.0
typing_extensions==4.13.0
urllib3==2.3.0
virtualenv==20.29.3
zipp==3.21.0

name: marshmallow
channels:
  - defaults
  - https://repo.anaconda.com/pkgs/main
  - https://repo.anaconda.com/pkgs/r
  - conda-forge
dependencies:
  - _libgcc_mutex=0.1=main
  - _openmp_mutex=5.1=1_gnu
  - ca-certificates=2025.2.25=h06a4308_0
  - ld_impl_linux-64=2.40=h12ee557_0
  - libffi=3.4.4=h6a678d5_1
  - libgcc-ng=11.2.0=h1234567_1
  - libgomp=11.2.0=h1234567_1
  - libstdcxx-ng=11.2.0=h1234567_1
  - ncurses=6.4=h6a678d5_0
  - openssl=3.0.16=h5eee18b_0
  - pip=25.0=py39h06a4308_0
  - python=3.9.21=he870216_1
  - readline=8.2=h5eee18b_0
  - setuptools=75.8.0=py39h06a4308_0
  - sqlite=3.45.3=h5eee18b_0
  - tk=8.6.14=h39e8969_0
  - tzdata=2025a=h04d1e81_0
  - wheel=0.45.1=py39h06a4308_0
  - xz=5.6.4=h5eee18b_1
  - zlib=1.2.13=h5eee18b_1
  - pip:
      - alabaster==0.7.11+sloria0
      - babel==2.17.0
      - cachetools==5.5.2
      - certifi==2025.1.31
      - chardet==5.2.0
      - charset-normalizer==3.4.1
      - colorama==0.4.6
      - coverage==7.8.0
      - distlib==0.3.9
      - docutils==0.20.1
      - exceptiongroup==1.2.2
      - execnet==2.1.1
      - filelock==3.18.0
      - flake8==2.4.1
      - idna==3.10
      - imagesize==1.4.1
      - importlib-metadata==8.6.1
      - iniconfig==2.1.0
      - invoke==0.21.0
      - jinja2==3.1.6
      - markupsafe==3.0.2
      - mccabe==0.3.1
      - packaging==24.2
      - pep8==1.7.1
      - platformdirs==4.3.7
      - pluggy==1.5.0
      - py==1.11.0
      - pyflakes==0.8.1
      - pygments==2.19.1
      - pyproject-api==1.9.0
      - pytest==8.3.5
      - pytest-asyncio==0.26.0
      - pytest-cov==6.0.0
      - pytest-mock==3.14.0
      - pytest-xdist==3.6.1
      - python-dateutil==2.9.0.post0
      - pytz==2025.2
      - requests==2.32.3
      - simplejson==3.20.1
      - six==1.17.0
      - snowballstemmer==2.2.0
      - sphinx==7.2.6
      - sphinx-issues==1.1.0
      - sphinxcontrib-applehelp==2.0.0
      - sphinxcontrib-devhelp==2.0.0
      - sphinxcontrib-htmlhelp==2.1.0
      - sphinxcontrib-jsmath==1.0.1
      - sphinxcontrib-qthelp==2.0.0
      - sphinxcontrib-serializinghtml==2.0.0
      - tomli==2.2.1
      - tox==4.25.0
      - typing-extensions==4.13.0
      - urllib3==2.3.0
      - virtualenv==20.29.3
      - zipp==3.21.0
prefix: /opt/conda/envs/marshmallow

tests/test_schema.py::test_load_many_invalid_input_type[False] tests/test_schema.py::test_load_many_invalid_input_type[1] tests/test_schema.py::test_load_many_invalid_input_type[1.2] tests/test_schema.py::test_load_many_invalid_input_type[val3] tests/test_schema.py::test_load_many_invalid_input_type[val4] tests/test_schema.py::test_load_many_invalid_input_type[val5] tests/test_schema.py::test_load_many_invalid_input_type[lol]
tests/test_schema.py::test_serializing_basic_object[UserSchema] tests/test_schema.py::test_serializing_basic_object[UserMetaSchema] tests/test_schema.py::test_serializer_dump tests/test_schema.py::test_dump_returns_dict_of_errors tests/test_schema.py::test_dump_with_strict_mode_raises_error[UserSchema] tests/test_schema.py::test_dump_with_strict_mode_raises_error[UserMetaSchema] tests/test_schema.py::test_dump_resets_errors tests/test_schema.py::test_load_resets_errors tests/test_schema.py::test_dump_resets_error_fields tests/test_schema.py::test_load_resets_error_fields tests/test_schema.py::test_load_resets_error_kwargs tests/test_schema.py::test_errored_fields_do_not_appear_in_output tests/test_schema.py::test_load_many_stores_error_indices tests/test_schema.py::test_dump_many tests/test_schema.py::test_multiple_errors_can_be_stored_for_a_given_index tests/test_schema.py::test_dump_many_stores_error_indices tests/test_schema.py::test_dump_many_doesnt_stores_error_indices_when_index_errors_is_false tests/test_schema.py::test_dump_returns_a_marshalresult tests/test_schema.py::test_dumps_returns_a_marshalresult tests/test_schema.py::test_dumping_single_object_with_collection_schema tests/test_schema.py::test_loading_single_object_with_collection_schema tests/test_schema.py::test_dumps_many tests/test_schema.py::test_load_returns_an_unmarshalresult tests/test_schema.py::test_load_many tests/test_schema.py::test_loads_returns_an_unmarshalresult tests/test_schema.py::test_loads_many tests/test_schema.py::test_loads_deserializes_from_json tests/test_schema.py::test_serializing_none tests/test_schema.py::test_default_many_symmetry tests/test_schema.py::test_on_bind_field_hook tests/test_schema.py::test_nested_on_bind_field_hook tests/test_schema.py::TestValidate::test_validate_returns_errors_dict tests/test_schema.py::TestValidate::test_validate_many tests/test_schema.py::TestValidate::test_validate_many_doesnt_store_index_if_index_errors_option_is_false tests/test_schema.py::TestValidate::test_validate_strict tests/test_schema.py::TestValidate::test_validate_required tests/test_schema.py::test_fields_are_not_copies[UserSchema] tests/test_schema.py::test_fields_are_not_copies[UserMetaSchema] tests/test_schema.py::test_dumps_returns_json tests/test_schema.py::test_naive_datetime_field tests/test_schema.py::test_datetime_formatted_field tests/test_schema.py::test_datetime_iso_field tests/test_schema.py::test_tz_datetime_field tests/test_schema.py::test_local_datetime_field tests/test_schema.py::test_class_variable tests/test_schema.py::test_serialize_many[UserSchema] tests/test_schema.py::test_serialize_many[UserMetaSchema] tests/test_schema.py::test_inheriting_schema tests/test_schema.py::test_custom_field tests/test_schema.py::test_url_field tests/test_schema.py::test_relative_url_field tests/test_schema.py::test_stores_invalid_url_error[UserSchema] tests/test_schema.py::test_stores_invalid_url_error[UserMetaSchema] tests/test_schema.py::test_email_field[UserSchema] tests/test_schema.py::test_email_field[UserMetaSchema] tests/test_schema.py::test_stored_invalid_email tests/test_schema.py::test_integer_field tests/test_schema.py::test_as_string tests/test_schema.py::test_extra tests/test_schema.py::test_extra_many tests/test_schema.py::test_method_field[UserSchema] tests/test_schema.py::test_method_field[UserMetaSchema] tests/test_schema.py::test_function_field tests/test_schema.py::test_prefix[UserSchema] tests/test_schema.py::test_prefix[UserMetaSchema] tests/test_schema.py::test_fields_must_be_declared_as_instances tests/test_schema.py::test_serializing_generator[UserSchema] tests/test_schema.py::test_serializing_generator[UserMetaSchema] tests/test_schema.py::test_serializing_empty_list_returns_empty_list tests/test_schema.py::test_serializing_dict tests/test_schema.py::test_serializing_dict_with_meta_fields tests/test_schema.py::test_exclude_in_init[UserSchema] tests/test_schema.py::test_exclude_in_init[UserMetaSchema] tests/test_schema.py::test_only_in_init[UserSchema] tests/test_schema.py::test_only_in_init[UserMetaSchema] tests/test_schema.py::test_invalid_only_param tests/test_schema.py::test_can_serialize_uuid tests/test_schema.py::test_can_serialize_time tests/test_schema.py::test_invalid_time tests/test_schema.py::test_invalid_date tests/test_schema.py::test_invalid_email tests/test_schema.py::test_invalid_url tests/test_schema.py::test_invalid_dict_but_okay tests/test_schema.py::test_custom_json tests/test_schema.py::test_custom_error_message tests/test_schema.py::test_load_errors_with_many tests/test_schema.py::test_error_raised_if_fields_option_is_not_list tests/test_schema.py::test_error_raised_if_additional_option_is_not_list tests/test_schema.py::test_nested_custom_set_in_exclude_reusing_schema tests/test_schema.py::test_nested_only tests/test_schema.py::test_nested_only_inheritance tests/test_schema.py::test_nested_only_empty_inheritance tests/test_schema.py::test_nested_exclude tests/test_schema.py::test_nested_exclude_inheritance tests/test_schema.py::test_nested_only_and_exclude tests/test_schema.py::test_nested_only_then_exclude_inheritance tests/test_schema.py::test_nested_exclude_then_only_inheritance tests/test_schema.py::test_nested_exclude_and_only_inheritance tests/test_schema.py::test_meta_nested_exclude tests/test_schema.py::test_nested_custom_set_not_implementing_getitem tests/test_schema.py::test_deeply_nested_only_and_exclude tests/test_schema.py::TestDeeplyNestedLoadOnly::test_load_only tests/test_schema.py::TestDeeplyNestedLoadOnly::test_dump_only tests/test_schema.py::TestDeeplyNestedListLoadOnly::test_load_only tests/test_schema.py::TestDeeplyNestedListLoadOnly::test_dump_only tests/test_schema.py::test_nested_constructor_only_and_exclude tests/test_schema.py::test_only_and_exclude tests/test_schema.py::test_exclude_invalid_attribute tests/test_schema.py::test_only_with_invalid_attribute tests/test_schema.py::test_only_bounded_by_fields tests/test_schema.py::test_only_empty tests/test_schema.py::test_nested_with_sets tests/test_schema.py::test_meta_serializer_fields tests/test_schema.py::test_meta_fields_mapping tests/test_schema.py::test_meta_field_not_on_obj_raises_attribute_error tests/test_schema.py::test_exclude_fields tests/test_schema.py::test_fields_option_must_be_list_or_tuple tests/test_schema.py::test_exclude_option_must_be_list_or_tuple tests/test_schema.py::test_dateformat_option tests/test_schema.py::test_default_dateformat tests/test_schema.py::test_inherit_meta tests/test_schema.py::test_inherit_meta_override tests/test_schema.py::test_additional tests/test_schema.py::test_cant_set_both_additional_and_fields tests/test_schema.py::test_serializing_none_meta tests/test_schema.py::TestErrorHandler::test_error_handler_decorator_is_deprecated tests/test_schema.py::TestErrorHandler::test_dump_with_custom_error_handler tests/test_schema.py::TestErrorHandler::test_dump_with_custom_error_handler_and_strict tests/test_schema.py::TestErrorHandler::test_load_with_custom_error_handler tests/test_schema.py::TestErrorHandler::test_load_with_custom_error_handler_and_partially_valid_data tests/test_schema.py::TestErrorHandler::test_custom_error_handler_with_validates_decorator tests/test_schema.py::TestErrorHandler::test_custom_error_handler_with_validates_schema_decorator tests/test_schema.py::TestErrorHandler::test_validate_with_custom_error_handler tests/test_schema.py::TestFieldValidation::test_errors_are_cleared_after_loading_collection tests/test_schema.py::TestFieldValidation::test_raises_error_with_list tests/test_schema.py::TestFieldValidation::test_raises_error_with_dict tests/test_schema.py::TestFieldValidation::test_ignored_if_not_in_only tests/test_schema.py::test_schema_repr tests/test_schema.py::TestNestedSchema::test_flat_nested tests/test_schema.py::TestNestedSchema::test_flat_nested_with_dump_to tests/test_schema.py::TestNestedSchema::test_nested_many_with_missing_attribute tests/test_schema.py::TestNestedSchema::test_nested_with_attribute_none tests/test_schema.py::TestNestedSchema::test_flat_nested2 tests/test_schema.py::TestNestedSchema::test_nested_field_does_not_validate_required tests/test_schema.py::TestNestedSchema::test_nested_required_errors_with_load_from tests/test_schema.py::TestNestedSchema::test_nested_none tests/test_schema.py::TestNestedSchema::test_nested tests/test_schema.py::TestNestedSchema::test_nested_many_fields tests/test_schema.py::TestNestedSchema::test_nested_meta_many tests/test_schema.py::TestNestedSchema::test_nested_only tests/test_schema.py::TestNestedSchema::test_exclude tests/test_schema.py::TestNestedSchema::test_list_field tests/test_schema.py::TestNestedSchema::test_nested_load_many tests/test_schema.py::TestNestedSchema::test_nested_errors tests/test_schema.py::TestNestedSchema::test_nested_strict tests/test_schema.py::TestNestedSchema::test_nested_dump_errors tests/test_schema.py::TestNestedSchema::test_nested_dump_strict tests/test_schema.py::TestNestedSchema::test_nested_method_field tests/test_schema.py::TestNestedSchema::test_nested_function_field tests/test_schema.py::TestNestedSchema::test_nested_prefixed_field tests/test_schema.py::TestNestedSchema::test_nested_prefixed_many_field tests/test_schema.py::TestNestedSchema::test_invalid_float_field tests/test_schema.py::TestNestedSchema::test_serializer_meta_with_nested_fields tests/test_schema.py::TestNestedSchema::test_serializer_with_nested_meta_fields tests/test_schema.py::TestNestedSchema::test_nested_fields_must_be_passed_a_serializer tests/test_schema.py::TestNestedSchema::test_invalid_type_passed_to_nested_field tests/test_schema.py::TestNestedSchema::test_all_errors_on_many_nested_field_with_validates_decorator tests/test_schema.py::TestNestedSchema::test_missing_required_nested_field tests/test_schema.py::TestSelfReference::test_nesting_schema_within_itself tests/test_schema.py::TestSelfReference::test_nesting_schema_by_passing_class_name tests/test_schema.py::TestSelfReference::test_nesting_within_itself_meta tests/test_schema.py::TestSelfReference::test_recursive_missing_required_field tests/test_schema.py::TestSelfReference::test_recursive_missing_required_field_one_level_in tests/test_schema.py::TestSelfReference::test_nested_self_with_only_param tests/test_schema.py::TestSelfReference::test_multiple_nested_self_fields tests/test_schema.py::TestSelfReference::test_nested_many tests/test_schema.py::test_serialization_with_required_field tests/test_schema.py::test_deserialization_with_required_field tests/test_schema.py::test_deserialization_with_required_field_and_custom_validator tests/test_schema.py::TestContext::test_context_method tests/test_schema.py::TestContext::test_context_method_function tests/test_schema.py::TestContext::test_function_field_raises_error_when_context_not_available tests/test_schema.py::TestContext::test_fields_context tests/test_schema.py::TestContext::test_nested_fields_inherit_context tests/test_schema.py::TestContext::test_nested_list_fields_inherit_context tests/test_schema.py::test_serializer_can_specify_nested_object_as_attribute tests/test_schema.py::TestFieldInheritance::test_inherit_fields_from_schema_subclass tests/test_schema.py::TestFieldInheritance::test_inherit_fields_from_non_schema_subclass tests/test_schema.py::TestFieldInheritance::test_inheritance_follows_mro tests/test_schema.py::TestAccessor::test_accessor_decorator_is_deprecated tests/test_schema.py::TestAccessor::test_accessor_is_used tests/test_schema.py::TestAccessor::test_accessor_with_many tests/test_schema.py::TestRequiredFields::test_required_string_field_missing tests/test_schema.py::TestRequiredFields::test_required_string_field_failure tests/test_schema.py::TestRequiredFields::test_allow_none_param tests/test_schema.py::TestRequiredFields::test_allow_none_custom_message tests/test_schema.py::TestDefaults::test_missing_inputs_are_excluded_from_dump_output tests/test_schema.py::TestDefaults::test_none_is_serialized_to_none tests/test_schema.py::TestDefaults::test_default_and_value_missing tests/test_schema.py::TestDefaults::test_loading_none tests/test_schema.py::TestDefaults::test_missing_inputs_are_excluded_from_load_output tests/test_schema.py::TestLoadOnly::test_load_only tests/test_schema.py::TestLoadOnly::test_dump_only tests/test_schema.py::TestStrictDefault::test_default tests/test_schema.py::TestStrictDefault::test_meta_true tests/test_schema.py::TestStrictDefault::test_meta_false tests/test_schema.py::TestStrictDefault::test_default_init_true tests/test_schema.py::TestStrictDefault::test_default_init_false tests/test_schema.py::TestStrictDefault::test_meta_true_init_true tests/test_schema.py::TestStrictDefault::test_meta_true_init_false tests/test_schema.py::TestStrictDefault::test_meta_false_init_true tests/test_schema.py::TestStrictDefault::test_meta_false_init_false
CHANGELOG.rst marshmallow/marshalling.py
CHANGELOG.rst marshmallow/marshalling.py