Pleasant Township is one of thirteen townships in Grant County, Indiana, United States. As of the 2010 census, its population was 6,797 and it contained 3,166 housing units.

Grant County is a county in central Indiana in the United States Midwest. At the time of the 2020 census, the population was 66,674. The county seat is Marion. Important paleontological discoveries, dating from the Pliocene epoch, have been made at the Pipe Creek Sinkhole in Grant County.