Addison Township is a township in Cass County, North Dakota, United States. It has a population of 99 as of the 2020 census.
Addison Township was named after landowner Addison Leach.
Addison Township has a total area of , all land.
Despite officially having no water area according to the United States Census Bureau, Maple River runs through the western portion of the township.
The township contains one church: Canaan Moravian Church.
As of the 2024 American Community Survey, there are an estimated 13 households.