Isabel "Lefty" Álvarez (born October 31, 1933) is a Cuban former pitcher and outfielder who played in the All-American Girls Professional Baseball League between the 1949 and 1954 seasons.
She batted and threw left-handed.Isabel Álvarez was the youngest Cuban player to join the All-American Girls Professional Baseball League, a women's circuit born during World War II and made famous in the 1992 film A League of Their Own.