Lenna B. Arnold (October 29, 1920 – January 22, 2010) was a pitcher who played in the All-American Girls Professional Baseball League.

[1][2] Arnold was an outstanding softball pitcher before joining the AAGPBL with her hometown Fort Wayne Daisies in the 1946 season.

An all-around athlete, she excelled at softball with the Uhligs Machine Shop and also played basketball for the City Light squad, while participating in golf, skiing and bowling.

[2] ״Sis״, as her Daisies teammates called her, had a modest career during her only season in the league, ending with a 2–4 record in just six pitching appearances.

[2] Following her retirement, she followed the Indiana Hoosiers on the basketball court and enjoyed travelling throughout the United States in a motorhome.