right|thumb|100px|Former coat of arms

Loccum () is a village situated about west-northwest of Hanover in the district of Nienburg in Lower-Saxony, Germany. It has been a part of the city of Rehburg-Loccum since 1974. Loccum covers an area of with a population of about 3166 people in 2003.

left|thumb|Loccum Abbey

Loccum Abbey was founded in 1163 by Cistercian monks from Volkenroda Abbey in Thuringia, becoming a Lutheran monastery around 1600. It is one of the best preserved buildings of its kind in Germany.

Loccum is home to a Protestant academy for prospective ministers.

  • Loccum Abbey
  • Rehburg-Loccum