Sir Samuel Martin QC (1801 – 9 January 1883) was an Anglo-Irish politician and judge.
In 1838, he married Frances Homera, the daughter of Sir Frederick Pollock, Lord Chief Baron of the Exchequer.
Martin was active as a barrister on the Northern Circuit, and gained a reputation for skill.
Martin left the Exchequer bench in 1873, due to deafness, and was appointed a Privy Counsellor on 2 February 1874.
He divided his time between his estate at Myroe, County Londonderry (where he was a justice of the peace and a deputy lieutenant) and his London residence in Piccadilly.