Brian Kerr, Baron Kerr of Tonaghmore (1948–2020), was a Northern Irish barrister and judge.
Lord Kerr may also refer to:
- John Kerr, Baron Kerr of Kinlochard (born 1942), British diplomat and civil servant
- Michael Ancram, Baron Kerr of Monteviot (born 1945), British politician and Conservative peer
- Lord Kerr of Nisbet, Langnewtoun and Dolphinstoun, a subsidiary title (created 1633) of the Marquess of Lothian