The 1891 Wimbledon Championships took place on the outdoor grass courts at the All England Lawn Tennis Club in Wimbledon, London, United Kingdom. The tournament ran from 29 June until 9 July. It was the 15th staging of the Wimbledon Championships, and the first Grand Slam tennis event of 1891. There were 22 competitors for the men's singles. Wilfred Baddeley was 19 years, 5 months and 23 days old when he won the men's singles final on 4 July. The ladies' singles and men's doubles were held after the men's singles had been completed.

Champions

Men's singles

🇬🇧 Wilfred Baddeley defeated 🇬🇧 Joshua Pim, 6–4, 1–6, 7–5, 6–0

Women's singles

🇬🇧 Lottie Dod defeated 🇬🇧 Blanche Hillyard, 6–2, 6–1

Men's doubles

🇬🇧 Herbert Baddeley / 🇬🇧 Wilfred Baddeley defeated 🇬🇧 Joshua Pim / 🇬🇧 Frank Stoker, 6–1, 6–3, 1–6, 6–2