Donnybrook may refer to:
- Placenames
- Donnybrook, Dublin, Ireland
- site of the original Donnybrook Fair
- donnybrook is a brawl - named for the fair
- Donnybrook Stadium, Ireland, a rugby union stadium
- site of the original Donnybrook Fair
- Donnybrook Quarter, United Kingdom, a residential area in the Bow area of London's East End
- Donnybrook, KwaZulu-Natal, South Africa
- Donnybrook, North Dakota, United States of America
- Donnybrook, Queensland, Australia
- Donnybrook, Western Australia, Australia
- Donnybrook, Victoria, Australia
- Donnybrook railway station, Victoria, Australia
Donnybrook may also refer to:
- Donnybrook!, a 1961 Broadway musical
- Donnybrook Writing Academy, a society blog based in Denver