Wabash Township is one of twelve townships in Adams County, Indiana. As of the 2020 census, its population was 6,545, up from 6,223 at the 2010 census.
According to the 2010 census, the township has a total area of , of which (or 98.80%) is land and (or 1.20%) is water.
The township contains these cemeteries: Bunker Hill Amish, Bunker Hill (Baker Family), Collins (Ceylon), Crawford (also known as Rawley or Prairie Burying), Cross/Kross Reformed (Hoffstetter), MRE (Mennonite Reformed Evangelical), Nussbaum Family (no longer exists), Riverside, Snow, Studebaker, and Westlawn (Pyle).