Dorothea Lambert Chambers (née Dorothea Katherine Douglass, 3 September 1878 – 7 January 1960) was a British tennis player.
Dorothea Lambert Chambers has won 7 Grand Slams.

Singles: 11 (7 titles, 4 runner-ups)
| Result | Year | Championship | Surface | Opponents | Score |
|---|---|---|---|---|---|
| Win * | 1903 | Wimbledon | Grass | Ethel Thomson | 4–6, 6–4, 6–2 |
| Win | 1904 | Wimbledon (2) | Grass | Charlotte Cooper Sterry | 6–0, 6–3 |
| Loss | 1905 | Wimbledon | Grass | May Sutton | 3–6, 4–6 |
| Win | 1906 | Wimbledon (3) | Grass | May Sutton | 6–3, 9–7 |
| Loss | 1907 | Wimbledon | Grass | May Sutton | 1–6, 4–6 |
| Win | 1910 | Wimbledon (4) | Grass | Dora Boothby | 6–2, 6–2 |
| Win | 1911 | Wimbledon (5) | Grass | Dora Boothby | 6–0, 6–0 |
| Win ** | 1913 | Wimbledon (6) | Grass | Winifred McNair | 6–0, 6–4 |
| Win | 1914 | Wimbledon (7) | Grass | Ethel Thomson Larcombe | 7–5, 6–4 |
| Loss | 1919 | Wimbledon | Grass | Suzanne Lenglen | 8–10, 6–4, 7–9 |
| Loss | 1920 | Wimbledon | Grass | Suzanne Lenglen | 3–6, 0–6 |