Gandhi Sagar Dam, Dam in Madhya Pradesh, India

Gandhi Sagar Dam is a masonry gravity dam on the Chambal River in the Mandsaur district of Madhya Pradesh, 62.17 metres (204 ft) high and 514 metres (1,686 ft) long. Its crest carries a railing, and the downstream face is divided into twelve bays, each with a recessed opening above a curved lower lip. A 115-MW powerhouse stands at the toe of the dam.

The dam was built in the 1950s and 1960s as the first major project on the Chambal River, designed to enable irrigation and power generation. Its completion marked the start of a series of dams built downstream in the following decades.

The dam and its reservoir take their name from Mahatma Gandhi. The reservoir is recognised by BirdLife International under its A4iii criterion because waterbird gatherings there have been reported to exceed 20,000 at times, drawing birdwatchers throughout the year. The reservoir is also among India's largest by area, reaching a maximum length of 68 km and width of 26 km.

The dam wall is visible from the road, and the reservoir extends several kilometers upstream. Access is via main roads in the region, and the best time to visit is outside the monsoon months when water levels are more stable.

The reservoir lies in a region known for gharials, a rare crocodile species with a long narrow snout. The sanctuary downstream was established to protect these animals and other river inhabitants.