General O'Donnell may refer to:
Emmett O'Donnell Jr. (1906–1971), U.S. Air Force four-star general Enrique O'Donnell, Conde de La Bisbal (1769–1834), Spanish Army captain general Joseph O'Donnell (younger) (1768–1836), Spanish Army captain general Karl O'Donnell (1715–1771), Austrian Army general in the Seven Years' War Lawrence O'Donnell (general) (1933–2026), Australian Army lieutenant general Leopoldo O'Donnell (1809–1867), Spanish Army captain general Patrick O'Donnell (Canadian general) (1940–2015), Canadian Forces lieutenant general