Harry Sibthorpe Barlow (5 April 1860 – 16 July 1917[3]) was a British amateur lawn tennis player, active at the end of the 19th century.

[4] In total Barlow would reach three doubles finals at the Wimbledon Championships during his career (1892, 1893, 1894).

[5] At the 1889 Wimbledon Championships, Barlow beat Willoughby Hamilton in five sets in the semifinals.

[7][8] Renshaw survived a total of six match points in the All Comers Final against Barlow at 2–5 and 6–7 in the fourth set.

[9] He reached the All Comers Final again the following year, losing to Willoughby Hamilton in the 1890 Wimbledon Championships, who then defeated reigning champion Renshaw in the Challenge Round.