Nadym is a town in Yamalo-Nenets Autonomous Okrug, Russia, located on the river Nadym. The population has fluctuated over time: 46,611 (2010 Russian census); 45,943 (2002 Census); 52,586 (1989 Soviet census).

The Yamalo-Nenets Autonomous Okrug or Yamalia is a federal subject of Russia and an autonomous okrug of Tyumen Oblast. Its administrative center is the town of Salekhard, and its largest city is Novy Urengoy. The 2021 Russian Census recorded its population as 510,490.