Betty Wanless [Decker] (August 28, 1928 – December 20, 1995) was an infielder who played from 1953 through 1954 in the All-American Girls Professional Baseball League. Listed at 5 ft 5 in (1.65 m), 134 lb, Wanless batted and threw right-handed. She was born in Springfield, Illinois. Following her baseball career, she married Daniel George Decker. She is part of Women in Baseball, a permanent display based at the Baseball Hall of Fame and Museum in Cooperstown, New York, which was unveiled in 1988 to honor the entire All-American Girls Professional Baseball League.