Altenberge
Municipality
Market square in Altenberge
Coat of arms
Location of Altenberge within Steinfurt district
Altenberge Show map of Germany Altenberge Show map of North Rhine-Westphalia
Coordinates: 52°02′45″N 7°27′55″E / 52.04583°N 7.46528°E / 52.04583; 7.46528
Country	Germany
State	North Rhine-Westphalia
Admin. region	Münster
District	Steinfurt
Government
• Mayor (2020–25)	Karl Reinke[1] (Greens)
Area
• Total	62.96 km2 (24.31 sq mi)
Elevation	79 m (259 ft)
Population  (2023-12-31)[2]
• Total	10,438
• Density	170/km2 (430/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
Postal codes	48341
Dialling codes	02505
Vehicle registration	ST, BF, TE
Website	www.altenberge.de

Altenberge (Westphalian: Ollenbiärg) is a municipality in the district of Steinfurt, in North Rhine-Westphalia, Germany. It is situated approximately 15 km south-east of Steinfurt and 15 km north-west of Münster.

The machine manufacturers Schmitz and Wesseler were founded in Altenberge.

• Hans Blumenberg (1920-1996) German philosopher
• Herbert Vorgrimler (1929-2014) Catholic theologian and author
• Theresia Degener (born 1961), law professor in Bochum and one of the most important German activists for the rights of people with disabilities
• Pascal Koopmann (born 1990), footballer