The 1903 British Isles tour to South Africa was the fifth tour by a British Isles team and the third to South Africa. It is retrospectively classed as one of the British Lions tours, as the Lions naming convention was not adopted until 1950. Led by Scotland's Mark Morrison and managed by Johnny Hammond the tour took in 22 matches. Of the games three were test matches, played against the South Africa national rugby union team. The British Isles drew the first two test matches and lost the final encounter.