Robert Jack may refer to:
Rollo Jack (Robert Rollo Jack, 1902–1994), footballer Robert Jack (physicist) (1877–1957), Scottish-born physicist in New Zealand Robert Logan Jack (1845–1921), Queensland government geologist Bob Jack (1876–1943), Scottish footballer and manager Robert Jack, actor who played Czar Nicholas II in the 2019 docudrama series The Last Czars
See also Robert Jacks (1943—2014), Australian painter, sculptor and printmaker Robert L. Jacks (1927-1987), American film producer Robert Jacks, actor who played Leatherface in the cast of Texas Chainsaw Massacre: The Next Generation