Rex Armstrong

 Reginald (known as Rex) Armstrong , OBE (b December 6, 1897, Newcastle upon Tyne – d February 17, 1968, Morpeth) was a rugby union international prop who represented England in one international during 1925.

Armstrong was educated at the Newcastle University Medical School. He played for Durham Medicals, Northumberland and the Barbarians. During World War II he served with the RAMC and was awarded the OBE in 1944. In 1967 he became the first doctor to describe Foot-and-mouth disease in man in the UK.