Marvin is a town in Grant County, South Dakota, United States.

According to the United States Census Bureau, the town has a total area of 0.55 square miles (1.42 km2), all land.

The racial makeup of the town was 85.3% White, 5.9% Native American, and 8.8% from two or more races.

The racial makeup of the town was 84.85% White, 13.64% Native American, and 1.52% from two or more races.

Blue Cloud Abbey is a Benedictine monastery located near Marvin.

Media related to Marvin, South Dakota at Wikimedia Commons