Donnacha
Donnacha is an Irish given name; a variant of Donnchadh. Notable people with the name include:
- Donnacha Cody, Irish hurler for the Kilkenny senior team
- Donnacha Dennehy, Irish composer
- Donnacha Fahy, Irish hurler for Tipperary GAA
- Donnacha O'Brien, Irish jockey
- Donnacha O'Dea, Irish professional poker player and swimmer
- Donnacha Ryan, Irish rugby union player