Regency Park is an inner-northern suburb of Adelaide, 6 km from the City Centre, in the state of South Australia, Australia. It is located in the City of Port Adelaide Enfield, and is adjacent to Wingfield, Angle Park, Ferryden Park, Kilburn, Prospect, Dudley Park and Croydon Park. It is bounded to the north by Grand Junction Road, east by the Gawler railway line, south by Regency Road and to the west by Days and South Roads. The postcode for Regency Park is 5010.

The 361 bus serves Grand Junction Road. The 300 bus serves Regency Road its entire length. The 230 and 232 buses only serve Regency Road as far as Days Road. The 239 bus serves Days Road and Grand Junction Road. The suburb is also served by Islington railway station on the Gawler railway line. The North-South Motorway runs through Regency Park. It was recently extended; during this extension, the Regency Road intersection was removed.