Rene George Lachemann (born May 4, 1945) is a retired American professional baseball coach, catcher and manager.
He spent 33 years in Major League Baseball, including service as the first manager in the history of the Florida Marlins (1993–96) and manager of the Seattle Mariners (1981–83) and Milwaukee Brewers (1984).
His on-field professional career extended for 53 seasons, from 1964 through 2016, a record for a consecutive years in uniform on a full-time basis.