Otta is a city and administration center in Sel municipality in the Inland. The settlement has 1,715 inhabitants as of 1 January 2020, is located north of Gudbrandsdalen and is the only town in Nord-Gudbrandsdalen. In addition to the center of Otta, the city consists of Selsverket, Dahle and Hjellum.

Otta is a regional hub with Otta station - which is a railway station on the Dovre line - and the E6, with a common bus station for both train, bus and taxi. Otta is part of the National Park Kingdom and offers many outdoor activities. The temperature in Otta is relatively low because Otta is down by the river with humid air.

Through Otta, the river Otta, also called Ottaelva, flows into Gudbrandsdalslågen. The site has several quarries for extraction of soapstone and slate.

The town of Otta was not established until the Dovre line was opened here in 1896, before this was the Nord-Sel center in the municipality. Otta was granted city status in 2000. It is one of the few cities in Norway without its own church building.

Nord-Gudbrandsdal upper secondary school, department Otta is located in the industrial area Øya.