Máel Sechnaill mac Domnaill, also called Máel Sechnaill II or Máel Sechnaill Mór, was a King of Mide and High King of Ireland. His great victory at the Battle of Tara against Olaf Cuaran in 980 resulted in Gaelic Irish control of the Kingdom of Dublin. His name is sometimes anglicised as Malachy.
- Occupation
- sovereign, military commander
- Position held
- High King of Ireland, High King of Ireland, list of Kings of Mide
- Born
- 948
- Died
- September 2, 1022