Otsego Township is one of twelve townships in Steuben County, Indiana, United States. As of the 2020 census, its population was 2,466, down from 2,575 at 2010, and it contained 1,780 housing units.
According to the 2010 census, the township has a total area of , of which (or 96.43%) is land and (or 3.57%) is water. Lakes in this township include Ball Lake, Fee Lake, Hamilton Lake, Jackson Lake, Johnson Lake and Round Lake. The stream of Black Creek runs through this township.
(This list is based on USGS data and may include former settlements.)
The township contains five cemeteries: Carter, Hamilton, North Otsego, Otsego Center and Teegardin.