Pieksämäki (Finnish pronunciation: [ˈpie̯ksæˌmæki]) is a town and municipality of Finland.

The town has a population of 17,186 (31 December 2024)[2] and covers an area of 1,836.22 square kilometres (708.97 sq mi) of which 266.76 km2 (103.00 sq mi) is water.

[1] The population density is 10.95 inhabitants per square kilometre (28.4/sq mi).

Neighbouring municipalities are Hankasalmi, Joroinen, Juva, Kangasniemi, Leppävirta, Mikkeli, Rautalampi and Suonenjoki.

Diaconia University of Applied Sciences has one of its five campuses in Pieksämäki.