Oliver Rhoe Thornton (born 10 September 1979) is a Welsh stage actor and singer who is best known for his contributions to musical theatre in London's West End.

Thornton was born on 10 September 1979 in Abergavenny, Monmouthshire, Wales.

Whilst at school, he discovered an interest in performing and studied classical ballet from an early age.

He gained further acting experience with the Abergavenny Amateur Operatic Society (AAODS), which celebrated its 100th anniversary in 2011.

[citation needed] Thornton began performing in South Wales, where he studied classical ballet, before completing a BA Honours degree in Musical Theatre from Mountview Academy of Theatre Arts.