Nazyvayevsk is a Russian city, the administrative center of the Nazyvayevsk District of the Omsk Region.

Nazyvayevsk is located in the west of the Omsk Region on the Ishimsky Plain which is part of the West Siberian Plain. The city is divided into two equal parts by the railway line Tyumen-Omsk of the West Siberian Railway.

The highway distance to the regional centre, the city of Omsk makes about 210 km. The city is the junction of highways to Tyukalinsk (79 km), Krutinka (55 km) and Isilkul (80 km).

The sharp continental climate here had considerable temperature differences in the winter and summer time. The city population makes 11 382 people.