Harsum
Municipality
Coat of arms
Location of Harsum within Hildesheim district
Harsum Show map of Germany Harsum Show map of Lower Saxony
Coordinates: 52°12′N 9°57′E / 52.200°N 9.950°E / 52.200; 9.950
Country	Germany
State	Lower Saxony
District	Hildesheim
Government
• Mayor (2021–26)	Marcel Litfin[1] (Ind.)
Area
• Total	49.93 km2 (19.28 sq mi)
Elevation	70 m (230 ft)
Population  (2022-12-31)[2]
• Total	11,438
• Density	230/km2 (590/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
Postal codes	31177
Dialling codes	05127
Vehicle registration	HI
Website	www.harsum.de

Harsum is a village and a municipality in the district of Hildesheim, in Lower Saxony, Germany. It is situated approximately 6 km north of Hildesheim, and 25 km southeast of Hanover.

Harsum view from north with St. Cäcilia

Besides Harsum proper, the municipality consists of the villages of Adlum, Asel, Borsum, Hönnersum, Hüddessum, Klein Förste, Machtsum and Rautenberg.

• Johannes Nordhoff (1870-1950), Chairman of the Employers' Association of German Insurance Companies
• Joop Bergsma (1928-2011), Roman Catholic clergyman and theologian