The Oradea ghetto was one of the Nazi-era ghettos for European Jews during World War II. It was located in the city of Oradea (Hungarian: Nagyvárad) in Bihor County, Transylvania, now part of Romania but administered as part of Bihar County by the Kingdom of Hungary from the 1940 Second Vienna Award's grant of Northern Transylvania until late 1944. The ghetto was active in the spring of 1944, following Operation Margarethe.