Mark Alan Buehrle (pronounced /ˈbɜrli/) (born March 23, 1979, in St. Charles, Missouri) is a left-handed starting pitcher in Major League Baseball who has played for the Chicago White Sox since 2000.

Buehrle is a command pitcher, relying more on finesse and accuracy than velocity. He is considered an efficient pitcher, pitching quickly and keeping his pitch count low. Buehrle throws a fastball, curveball, changeup, slider, and cut fastball. He has pitched over 200 innings for the nine seasons since becoming a starter in 2001. He started the opening game for the White Sox every season from 2002 to 2006 and again in 2008 and 2009. Buehrle threw a no-hitter against the Texas Rangers on April 18, 2007, and a perfect game against the Tampa Bay Rays on July 23, 2009. In White Sox pitching history, Buehrle is currently fifth all-time in strikeouts, sixth in games started, and eighth in wins and innings pitched.

Buehrle attended Francis Howell North High School in St. Peters, Missouri. In his sophomore year Buehrle was cut from the school's baseball team. After High School Buehrle attended Jefferson College in Hillsboro, Missouri. He was later selected in the 38th round of the 1998 draft by the Chicago White Sox organization.