Dudinka, city and administrative centre of the former Taymyr autonomous okrug (district), now in Krasnoyarsk kray (territory), north-central Russia. A port on the lower Yenisey River, it was founded in 1667 and became a city in 1951. Dudinka exports nickel from the mines at Norilsk, with which it is connected by rail. It also has a natural-gas plant, using gas from fields about 100 miles (160 km) west of the city. Pop. (2006 est.) 24,988.