Ottersum is a village in the Dutch province of Limburg.

It is a part of the municipality of Gennep, and lies about 17 km southeast of Nijmegen.

The village was first mentioned in 1349-1362 as Dragondeez, and means "house of Dragon (person)".

[3] Ottersum developed along the Niers in the Early Middle Ages.

[4] The former monastery Maria Roepaan was built by the Sisters of Divine Providence from Münster during the Kulturkampf.