Grace Lenczyk Cronin (12 September 1927 — 13 December 2013) was an American amateur golfer who won the 1947 All American Open.
During her career, Lenczyk
was the winner of the Canadian Women's Amateur from 1947 to 1948 and the United States Women's Amateur Golf Championship in 1948.
In team events, she was a member of the winning American team at the 1948 and 1950 Curtis Cup.
Lenczyk was inducted into the Connecticut Golf Hall of Fame in 1969.