Donal O'Sullivan

Donal O'Sullivan is the name of the following people:

• Donal O'Sullivan (musicologist) ( Donal Joseph O'Sullivan ; 1893–1973), Irish musicologist and politician
• Donal O'Sullivan (historian) (* 1965), German-Irish journalist and historian
• Donal J. O'Sullivan († 1960), Irish chess player

This is a disambiguation page for differentiating between several terms identified with the same word.