Thomas Robert McInnes or (Gaelic) Tòmas Raibeart Mac Aonghais (5 November 1840 – 15 March 1904) was a Canadian physician, Member of Parliament, Senator, and the sixth Lieutenant Governor of British Columbia.

McInnes resigned his Commons seat 12 December 1881 and was appointed to the Senate by Prime Minister Macdonald twelve days later.

McInnes’ term as Lieutenant Governor was often stormy as he twice dismissed Premiers and appointed successors who were controversial.

Following the 1898 provincial election, incumbent Premier John Herbert Turner refused to resign, despite having only minority support.

McInnes then asked Attorney-General Joseph Martin to form a government, despite little support in the legislature, which fell on another no-confidence motion, 30-1.

McInnes made another controversial choice, asking James Dunsmuir the heir of a powerful business family, to become Premier.