John (Jack) Alexander Brymer OBE (27 January 1915 – 15 September 2003) was an English clarinettist. The Times called him "the leading clarinettist of his generation, perhaps of the century". He was largely self-taught as a player, and he performed as an amateur before being invited by Sir Thomas Beecham to join the Royal Philharmonic Orchestra in 1947. He remained with the orchestra until 1963, two years after Beecham's death.