Helen Newington Wills (October 6, 1905 – January 1, 1998), also known by her married names Helen Wills Moody and Helen Wills Roark, was an American tennis player. Wills was the first American woman athlete to become a global celebrity, making friends with royalty and film stars despite her preference for staying out of the limelight.
Helen Wills has won 19 Grand Slams.

Singles: 22 (19 titles, 3 runner-ups)
| Result | Year | Championship | Surface | Opponent | Score |
|---|---|---|---|---|---|
| Loss | 1922 | U.S. Championships | Grass | Molla Mallory | 3–6, 1–6 |
| Win | 1923 | U.S. Championships | Grass | Molla Mallory | 6–2, 6–1 |
| Loss | 1924 | Wimbledon | Grass | Kathleen McKane | 6–4, 4–6, 4–6 |
| Win | 1924 | U.S. Championships (2) | Grass | Molla Mallory | 6–1, 6–3 |
| Win | 1925 | U.S. Championships (3) | Grass | Kathleen McKane | 3–6, 6–0, 6–2 |
| Win | 1927 | Wimbledon | Grass | Lilí de Álvarez | 6–2, 6–4 |
| Win | 1927 | U.S. Championships (4) | Grass | Betty Nuthall | 6–1, 6–4 |
| Win | 1928 | French Championships | Clay | Eileen Bennett Whittingstall | 6–1, 6–2 |
| Win | 1928 | Wimbledon (2) | Grass | Lilí de Álvarez | 6–2, 6–3 |
| Win | 1928 | U.S. Championships (5) | Grass | Helen Jacobs | 6–2, 6–1 |
| Win | 1929 | French Championships (2) | Clay | Simonne Mathieu | 6–3, 6–4 |
| Win | 1929 | Wimbledon (3) | Grass | Helen Jacobs | 6–1, 6–2 |
| Win | 1929 | U.S. Championships (6) | Grass | Phoebe Holcroft Watson | 6–4, 6–2 |
| Win | 1930 | French Championships (3) | Clay | Helen Jacobs | 6–2, 6–1 |
| Win | 1930 | Wimbledon (4) | Grass | Elizabeth Ryan | 6–2, 6–2 |
| Win | 1931 | U.S. Championships (7) | Grass | Eileen Bennett Whittingstall | 6–4, 6–1 |
| Win | 1932 | French Championships (4) | Clay | Simonne Mathieu | 7–5, 6–1 |
| Win | 1932 | Wimbledon (5) | Grass | Helen Jacobs | 6–3, 6–1 |
| Win | 1933 | Wimbledon (6) | Grass | Dorothy Round | 6–4, 6–8, 6–3 |
| Loss | 1933 | U.S. Championships | Grass | Helen Jacobs | 6–8, 6–3, 0–3, ret. |
| Win | 1935 | Wimbledon (7) | Grass | Helen Jacobs | 6–3, 3–6, 7–5 |
| Win | 1938 | Wimbledon (8) | Grass | Helen Jacobs | 6–4, 6–0 |