Benjamin Louwrens Osler (23 November 1901 – 28 April 1962) was a rugby union footballer who played internationally for South Africa. Osler played mainly at fly-half for both South Africa, and his provincial team of Western Province. In 1933 Osler played in his last Test series when Australia toured South Africa. They played a five match series and Osler played in all five Tests, with the Springboks winning the series by 3 tests to 2. During the series he scored a try, conversion and drop-goal.