William Baird Allington (October 26, 1903 – August 17, 1966) was an American minor league baseball player and manager.

With Allington at the helm, the Rockford Peaches reached the playoff six times, winning the AAGPBL Championship Title in 1945 and in consecutive years from 1948 to 1950.

From 1945 to 1954, Allington posted a 583–398 record for a .594 winning percentage, never had a losing season and is the all-time leader in victories in the AAGPBL.

The Allington All-Stars played 100 games between 1955 and 1958, each booked in a different town, against male teams, while traveling over 10,000 miles in the manager's station wagon and a Ford Country Sedan.

The Allington All-Stars included players as Joan Berger, Gloria Cordes, Jeanie Descombes, Gertrude Dunn, Betty Foss, Mary Froning, Jean Geissinger, Katie Horstman, Maxine Kline, Dolores Lee, Magdalen Redman, Ruth Richard, Dorothy Schroeder, Jean Smith, Dolly Vanderlip and Joanne Weaver, among others.