The Lord Deputy was the representative of the monarch and head of the Irish executive under English rule, during the Lordship of Ireland and then the Kingdom of Ireland. He deputised prior to 1523 for the Viceroy of Ireland. The plural form is Lords Deputy.

List of Lords Deputy

Lordship of Ireland

Kingdom of Ireland

The title subsequently became Lord Lieutenant of Ireland, with the holder also known informally as the Viceroy.

Lord Deputy of Ireland
Peter Lely · Public domain via Wikimedia Commons
Lord Deputy of Ireland
George Perfect Harding · Public domain via Wikimedia Commons
Lord Deputy of Ireland
anonymous · Public domain via Wikimedia Commons
Lord Deputy of Ireland
Anglo/Irish School · Public domain via Wikimedia Commons
Lord Deputy of Ireland
anonymous · Public domain via Wikimedia Commons
Lord Deputy of Ireland
Attributed to Robert Walker · Public domain via Wikimedia Commons