Leander Club, founded in 1818, is one of the oldest rowing clubs in the world, and the oldest non-academic club. It is based in Remenham in Berkshire, England and adjoins Henley-on-Thames. Only three other surviving clubs were founded prior to Leander: Brasenose College Boat Club and Jesus College Boat Club and Westminster School Boat Club, founded in 1813.

London Rowing Club is the second oldest of the non-academic active rowing clubs on the Thames in London, United Kingdom. It was founded in 1856 by members of the long-disbanded Argonauts Club wishing to compete at Henley Royal Regatta.