1931 U.S. National Championships – Women's singles

Women's singles
1931 U.S. National Championships
Champion Helen Wills Moody
Runner-up Eileen Bennett Whittingstall
Score6–4, 6–1

First-seeded Helen Wills Moody defeated Eileen Bennett Whittingstall 6–4, 6–1 in the final to win the women's singles tennis title at the 1931 U.S. National Championships. Wills Moody won the tournament without losing a set.