Michael O'Donnell

Michael O'Donnell may refer to:

Michael O'Donnell (physician) (1928–2019), British doctor, journalist, author, and broadcaster
Michael O'Donnell (Kansas politician) (born 1985), American researcher, and lecturer
Michael E. O'Donnell, American biochemist
Michael O'Donnell (rugby league), New Zealand former professional rugby league footballer
Michael A. O'Donnell, American writer and researcher
Michael O'Donnell (Missouri politician), politician in Missouri