Donaldson is an unincorporated community and census-designated place (CDP) in West Township, Marshall County, Indiana, United States.

It is home to Ancilla College and the American motherhouse of the Poor Handmaids of Jesus Christ.

U.S. Route 30 runs along the northern edge of the community, leading east 7 miles (11 km) to Plymouth, the county seat, and west 3 miles (5 km) to Grovertown.

According to the U.S. Census Bureau, the Donaldson CDP has an area of 0.49 square miles (1.27 km2), all land.

This Marshall County, Indiana location article is a stub.