Lynn Everett McGlothen (March 27, 1950 - August 14, 1984) was a starting pitcher in Major League Baseball. From 1972 through 1981, McGlothen played for the Boston Red Sox (1972-1973), St. Louis Cardinals (1974-1976), San Francisco Giants (1977-1978), Chicago Cubs (1978-1981), Chicago White Sox (1981) and New York Yankees (1982). He batted left-handed and threw right-handed.
A native of Monroe, Louisiana, McGlothen pitched in part of two seasons for the Boston Red Sox. He had his first full season with the Cardinals in 1974, finishing 16-12 with a 2.70 ERA and an All-Star berth. He had 15 and 13 wins in 1975 and 1976, respectively, and was sent to the Giants before 1977.
On August 19, 1975, McGlothen struck out three batters on nine pitches in the second inning of a 2-1 win over the then powerful Cincinnati Reds. McGlothen became the 11th National League pitcher and the 18th pitcher in Major League history to accomplish the nine-strike/three-strikeout half-inning.
Hampered by a shoulder problem, McGlothen spent much of 1977 on the disabled list and was sent to the Cubs in the 1978 midseason. He won 13 for the Cubs in 1979 and 12 in 1980, but elbow problems limited him to a total of six starts with the Cubs and White Sox the following year before closing out his career with the Yankees in 1982.
McGlothen was killed in a fire in Dubach, Louisiana, at age 34.