Donnacha

Donnacha is an Irish given name; a variant of Donnchadh. Notable people with the name include:


 * Donnacha Cody (born 1985), Irish hurler for the Kilkenny senior team
 * Donnacha Dennehy (born 1970), Irish composer
 * Donnacha Fahy (born 1979), Irish hurler for Tipperary GAA
 * Donnacha O'Brien (born 1998), Irish jockey
 * Donnacha O'Dea (born 1948), Irish professional poker player and swimmer
 * Donnacha Ryan (born 1983), Irish rugby union player
 * Donnacha Costello, Irish composer