Karl Otto Kuehl (pronounced "keel"; September 5, 1937 – August 6, 2008) was an American scout, farm system official, coach and manager in Major League Baseball. He also was the co-author of two books on the mental approach to baseball: The Mental Game of Baseball: A Guide to Peak Performance (1989) and A Champion's State of Mind (2005).
After weathering the 1976 debacle (the Expos ultimately would lose 107 of 162 games that season), Kuehl remained in the Major Leagues as a coach for the Minnesota Twins under manager Gene Mauch, the man he replaced in Montreal. He then headed the player development department of the Oakland Athletics during a period (1983–1995) when the A's had one of the most productive farm systems in baseball, and for two seasons (1996–1997) worked in the front office of the Toronto Blue Jays. From 2001 through 2007, Kuehl was special advisor, baseball operations, for the Cleveland Indians.