Leonard Joseph Whitehouse (born September 10, 1957) is a retired Major League Baseball player who pitched in relief for the Texas Rangers in 1981 and for the Minnesota Twins from 1983 to 1985.
He finished his career with a 9-4 record with four saves and a 4.24 ERA in 97 appearances.
Since 1967, he is one of only two Vermont high school baseball players to make it into the Major Leagues.
He was the pitcher when Reggie Jackson struck out for the 2,000th time in his career.