William Edward "Roscoe" Coughlin (February 23, 1865 – March 20, 1951) was an American professional baseball player who was a pitcher for two seasons in the National League (NL).

[2][4] Later into the season, he moved to the West Coast and played for the Oakland Greenhood & Morans, and the San Francisco Pioneers, both members of the California League (CL).

[2] After registering 27 wins, he made his Major League Baseball debut on April 22 for the Chicago Colts of the NL, pitching them to a 13–3 victory over the Cincinnati Reds.

[1][6][7] In his short time with the Colts, he had a 4–6 win–loss record, with his last decision occurring on June 11, in a 7–1 victory over the Cleveland Spiders in the first game of a doubleheader.

[2] He began the 1891 season with the Syracuse Stars of the Eastern Association, playing from April 24 until August 28, until he joined the New York Giants of the NL.