Carlos Alberto Zambrano (born June 1, 1981, in Puerto Cabello, Venezuela), popularly known as "Big Z" or "El Toro", is a right-handed starting pitcher in Major League Baseball who has played for the Chicago Cubs since 2001. He is signed with the Cubs through the 2012 season.

Zambrano, an imposing figure at 6' 5" and 255 pounds, was signed by the Cubs as a free agent in 1997 and made his debut in 2001. After being used in both starting and relief duties, he enjoyed his first full season as a starter in 2003, finishing with a 13-11 record, 168 strikeouts and a 3.11 ERA.

Widely regarded as one of the best hitting pitchers in the game, Zambrano, a switch-hitter, has a career .240 batting average with 20 home runs, 51 RBIs and a slugging percentage of .394. The 20 home runs are the most ever by a Cubs pitcher. He also tied with Ferguson Jenkins for the club record for home runs by a pitcher in a single season, hitting six in 2006. Due to his impressive stats at the plate he has been called on to pinch hit 19 times in his career and has won a Silver Slugger Award twice for his hitting.