Archbishop Donatus Ó Muireadhaigh (aka Donatus O'Murray) was a fifteenth century Archbishop of Tuam, an archdiocese in western Ireland surrounding Galway, who granted the status of collegiate church to the St. Nicholas' Collegiate Church in Galway in 1484. The event was celebrated during the Galway Quincentennial Year, in 1984.
Appointed 2 December 1450 and consecrated after that date. Died 17 January 1485.
| Preceded by John de Burgo |
Archbishop of Tuam 1450–1485 |
Succeeded by Walter Blake (Clonmacnoise) |