Herb Pennock was an American professional baseball player whose career spanned from 1912 to 1947. He was a pitcher and a member of the Baseball Hall of Fame.

Pennock began his professional career with the Philadelphia Athletics and was a member of the team when it won the World Series in 1913 and 1914. He went on to pitch in the minor leagues before signing with the Boston Red Sox in 1915. Pennock was a key member of the Red Sox pitching staff for five seasons, before being traded to the New York Yankees in 1923.

With the Yankees he was part of the team that won six American League pennants and four World Series championships. He also recorded a career-best 23 wins in 1924. Pennock was a three time All-Star and won the ERA title in 1928. He was also an excellent hitter, batting .286 for his career.

Pennock retired from baseball in 1934 after a brief stint with the Philadelphia Phillies. He returned to the Yankees in 1936 as a coach, and in 1939 was hired as the general manager of the team. He held this position until 1946, when he returned to the mound for one final season.

Pennock was elected to the Baseball Hall of Fame in 1948, in recognition of his outstanding career. He was the first pitcher to amass over 200 wins and 2,500 strikeouts. His career record stands at 241-162, with a 3.60 ERA and 2,515 strikeouts.