Silas Kenneth Johnson (October 5, 1906 – May 12, 1994) was an American professional baseball player, a right-handed pitcher who appeared in 492 Major League games pitched over 17 seasons for the Cincinnati Reds (1928–36), St. Louis Cardinals (1936–38), Philadelphia Phillies (1940–43; 1946) and Boston Braves (1946–47).

He was born in Danway, near Ottawa, Illinois, and was listed as 5 feet 11 inches (1.80 m) tall and 185 pounds (84 kg).

Missing the 1944–45 baseball seasons, Johnson served with the US Navy during World War II.

Johnson remained in baseball for two seasons after his active career ended, serving as batting practice pitcher and then pitching coach of the Braves (1948–49); he was a member of Boston's 1948 National League champions.

This biographical article relating to an American baseball pitcher born in the 1900s is a stub.