Oppidum Novum is the name of several ancient towns:
* Lourdes, Oppidum Novum (Aquitania), city in Aquitaine, France
* Aïn Defla, Oppidum Novum (Caesariensis), city in Mauretania Caesariensis, now in Algeria
* City in Mauretania Tingitana, today Ksar el-Kebir#History, Ksar el-Kebir in Morocco
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Archaeological sites in Morocco
Archaeological sites in Algeria
Catholic titular sees in Africa
Former Roman Catholic dioceses in Africa
Roman towns and cities in Mauretania Tingitana
Roman towns and cities in Mauretania Caesariensis