Percival Cale Oliver (1 April 1919 – 9 July 2011) was an Australian backstroke swimmer who competed in the 1936 Summer Olympics.

[1] At the age seventeen he competed at the 1936 Summer Olympics in Berlin, where he finished seventh in the 100-metre backstroke.

Two years later he won gold in the 110-yard backstroke at the 1938 British Empire Games in Sydney.

He also won a bronze medal as member of the Australian team in the 3x110-yard medley contest and competed in the 110-yard freestyle.

Oliver went on to teach at Mt Lawley and Hollywood Senior High Schools before taking over the administration of the Education Department's vacation swimming program.