Thomas O'Donnell

Thomas (or Tom) O'Donnell may refer to:
 * Thomas Joseph O'Donnell (1876-1949), Australian Catholic priest
 * Thomas O'Donnell (Irish nationalist politician) (1871–1943), Irish nationalist MP
 * Thomas O'Donnell (Sinn Féin politician) (died 1945), Irish Sinn Féin represented Sligo-Mayo East in the 1920s
 * Thomas A. O'Donnell (1870–1945), oil industrialist and builder of the O'Donnell Golf Club in Palm Springs, California
 * Thomas E. O'Donnell (draft opponent) (1841–c. 1875), powerful force in New York draft riots
 * Thomas E. O'Donnell (judge) (born 1954), Irish judge
 * Tom O'Donnell (cricketer) (born 1996), Australian cricketer
 * Tom O'Donnell (physician) (1926–2014), New Zealand medical doctor
 * Tom O'Donnell (politician) (1926–2020), Irish Fine Gael TD and MEP