Mary MacKillop is Australia's first and only Roman Catholic Saint.
Mary MacKillop may also refer to:
- Mary MacKillop College (disambiguation)
- Mary MacKillop College, Kensington, Adelaide, South Australia
- Mary MacKillop College, Wakeley, Sydney, New South Wales
- Mary MacKillop Catholic Regional College, Leongatha, Victoria
- St Mary MacKillop College, Albury
- St Mary MacKillop College, Canberra
- Mary MacKillop Interpretive Centre, Penola, South Australia
- Mary Mackillop Memorial Chapel and Museum, North Sydney, New South Wales