Diekholzen
Municipality
Coat of arms
Location of Diekholzen within Hildesheim district
Diekholzen Show map of Germany Diekholzen Show map of Lower Saxony
Coordinates: 52°06′N 09°56′E / 52.100°N 9.933°E / 52.100; 9.933
Country	Germany
State	Lower Saxony
District	Hildesheim
Government
• Mayor (2021–26)	Matthias Bludau[1] (SPD)
Area
• Total	30.21 km2 (11.66 sq mi)
Population  (2022-12-31)[2]
• Total	6,283
• Density	210/km2 (540/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
Postal codes	31199
Dialling codes	05121 and 05064
Vehicle registration	HI
Website	www.diekholzen.de

Diekholzen is a village and a municipality in the district of Hildesheim, in Lower Saxony, Germany. It is situated approximately 6 km southwest of Hildesheim on the Beuster, a tributary of the Innerste.

In 1974, the former villages of Diekholzen, Söhre, Barienrode and Egenstedt were united to form the municipality of Diekholzen. Each village has its own history and various sights. Most of the inhabitants are Roman Catholics. The largest village of the municipality is Diekholzen with an administration building, a school, a hospital, several shops, a supermarket, some restaurants and a hotel. Several times a day, each village of the municipality is accessible from Hildesheim and from Alfeld by bus.

• Johann Friedrich Ruthe (1788-1859), lecturer, botanist and entomologist; born in the district of Egenstedt
• Karl Hoppe (1923-1987), motorcycle racing driver

• 
  Saint Jakobus Church (1656), Diekholzen
• 
  Protestant Church (1963), Diekholzen
• 
  Half-timbered house, Diekholzen
• 
  Chapel (1996) on the river Beuster, Diekholzen
• 
  Miners' Memorial, Diekholzen
• 
  Nature reserve, Söhre
• 
  Memorial stone, Söhre
• 
  Saint Nicholas Church (1734), Barienrode
• 
  Stone cross (1860), Barienrode