diff --git a/pysparkling/sql/expressions/aggregate/stat_aggregations.py b/pysparkling/sql/expressions/aggregate/stat_aggregations.py
index <HASH>..<HASH> 100644
--- a/pysparkling/sql/expressions/aggregate/stat_aggregations.py
+++ b/pysparkling/sql/expressions/aggregate/stat_aggregations.py
@@ -107,3 +107,11 @@ class StddevPop(SimpleStatAggregation):
     def __str__(self):
         return "stddev_pop({0})".format(self.column)
 
+
+class Skewness(SimpleStatAggregation):
+    def eval(self, row, schema):
+        return self.stat_helper.skewness
+
+    def __str__(self):
+        return "skewness({0})".format(self.column)
+
Implement Skewness aggregation