| Date: | 29 June – 9 July |
| Edition: | 15th |
| Location: | Worple Road SW19, Wimbledon, London, United Kingdom |
| Venue: | All England Lawn Tennis Club |
| Surface: | Grass |
| Category: | Grand Slam |
| Champms: |  Wilfred Baddeley |
| Champws: | Lottie Dod |
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.[1] 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.[2] 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.
See main article: 1891 Wimbledon Championships – Men's singles. Wilfred Baddeley defeated Joshua Pim, 6–4, 1–6, 7–5, 6–0 [3]
See main article: 1891 Wimbledon Championships – Women's singles. Lottie Dod defeated Blanche Hillyard, 6–2, 6–1 [4]
See main article: 1891 Wimbledon Championships – Men's doubles. Herbert Baddeley / Wilfred Baddeley defeated Joshua Pim / Frank Stoker, 6–1, 6–3, 1–6, 6–2 [5]