Guido Joe "Wedo" Martini (July 1, 1913 – October 28, 1970) was a Major League Baseball pitcher who played in 1935 with the Philadelphia Athletics. He batted and threw right-handed.
Martini was born in Birmingham, Alabama where he played high school baseball, once throwing a no-hitter against Ensley High School. He moved with his parents to Philadelphia in 1933 and played semi-professional baseball for years before signing a contract with Connie Mack and the Athletics, who assigned him to the minor league Richmond Colts. He played three games with the Athletics and was cut by the end of the season.
He later worked as a driver for The Philadelphia Inquirer and was a member of the Teamsters Union Local 628 at the time of his death in Philadelphia in 1970.