Helen Claire Gilleaudeau (1896 – 1959) was an American tennis player who was active in the 1920s.

Gilleaudeau competed in the doubles event of the 1921 U.S. National Championships, held at the Longwood Cricket Club in Chestnut Hill, Massachusetts, with her partner Aletta Bailey Morris.

They reached the final which was lost in straight sets to Mary Browne and Louise Riddell Williams.

[1][2] In the singles event she reached the quarterfinals where she was beaten by May Sutton Bundy.

[3] Gilleaudeau won the Connecticut State singles championship in 1921,[4] 1922 and 1926.