Tolna is a city in Nelson County, North Dakota, United States.

According to the United States Census Bureau, the city has a total area of 0.76 square miles (1.97 km2), all land.

The racial makeup of the city was 97.0% White, 1.8% Native American, and 1.2% from two or more races.

The racial makeup of the city was 99.01% White, 0.50% Native American, and 0.50% from two or more races.

None of the families and 11.3% of the population were living below the poverty line, including no under eighteens and 29.5% of those over 64.