Reginald Halsey Birkett was an English footballer who played for Clapham Rovers, as well as the England national side. He also played international rugby union for England in 1871, in the first international rugby match. In this match he scored England's first try.

Clapham Rovers was from its foundation in 1869 a leading English sports organisation in the two dominant codes of football, association football and rugby union. It was a prominent club in the late 19th century but is now defunct. The club played variously on Clapham Common, Tooting Bec Common, and Wandsworth Common and wore a cerise and French-grey kit.