Abashiri is located in the eastern part of Okhotsk Subprefecture, about 50 kilometers east of Kitami. There are no tall mountains, but there are many hills. The Abashiri River flows through the city and there are three lakes (Lake Abashiri, Lake Notoro and Lake Tōfutsu) in the city as well. These lakes and Mount Tento belong to Abashiri Quasi-National Park.