Joseph Nicholas Delahanty (October 18, 1875 in Cleveland, Ohio – January 29, 1936 in Cleveland, Ohio), was a professional baseball player who played outfielder and second baseman in the major leagues from 1907 to 1909. He was one of five Delahanty brothers to play in the majors: the others were Ed, Frank, Jim, and Tom.^[1]

Joe Delahanty
Outfielder
Born: October 18, 1875 Cleveland, Ohio
Died: January 29, 1936(1936-01-29) (aged 60) Cleveland, Ohio
Batted: Right Threw: Right
MLB debut
September 30, 1907, for the St. Louis Cardinals
Last MLB appearance
October 6, 1909, for the St. Louis Cardinals
MLB statistics
Batting average	.238
Home runs	4
Runs batted in	100
Teams
St. Louis Cardinals (1907–1909)

Delahanty started his professional career in 1897. He had his breakthrough year in 1907, hitting .355 for Williamsport of the Tri-State League. In August, he was purchased by the St. Louis Cardinals. He became the team's regular left fielder the following season and played with them through 1909. On Joe's major league debut in 1907, the Delahanty brothers broke the record for the most siblings ever to play major league baseball (five), a record which still stands. The previous record (four) had been established in 1901 by the Cross brothers: Amos, Lave, Joe and Frank.

After his baseball career ended, Delahanty worked in a sheriff's office.