Dudinka (Russian: Дуди́нка; Nenets: Тут'ын, Tutꜧyn) is a town on the Yenisei River and the administrative center of Taymyrsky Dolgano-Nenetsky District of Krasnoyarsk Krai, Russia.

Dudinka is home to a unique Arctic port, in the lower reaches of the Yenisey, which accessible to both sea and river ships.

During the navigation season, from mid-June to October, the port can receive both seafaring ships and river vessels from Krasnoyarsk (about 2,000 km along the Yenisey).

As soon as the navigation is possible, fruit and vegetable stalls spring up in the streets and food prices in grocery stores drop drastically.

And, when the Yenisey is icebound, Dudinka receives and dispatches ice-class vessels taking the Northern Sea Route.

They take away the products of the Norilsk Mining and Metallurgical Combine and bring the fuel and raw materials that industrial plants rely on for their operation.

The port operates every day apart from a couple of weeks a year, when it is flooded during the spring high water.

When, at the end of May, the ice starts breaking up on the Yenisey, the cranes are moved from the port to special holding areas, where they remain for the duration of the high water.

Average high temperature even in May is below freezing and short summer starts in mid June and lasts only 2 months, despite the midnight sun.