Thomas McDonnell (disambiguation)

Thomas McDonnell (c. 1831–1899) was a military leader in colonial New Zealand.

Thomas McDonnell or McDonell may also refer to:

• Thomas McDonnell Sr. (1788–1864), trader and diplomat in colonial New Zealand
• Thomas John McDonnell (1894–1961), Roman Catholic bishop in the United States
• Thomas McDonnell (bishop) (1912–1987), Roman Catholic bishop in Ireland
• Thomas McDonell (born 1986), actor, musician and artist in the United States