Jeffrey Charles Weaver (born August 22, 1976 in Los Angeles, California) is a right-handed Major League Baseball pitcher for the Los Angeles Dodgers. He has pitched in the majors for the Detroit Tigers, New York Yankees, Los Angeles Dodgers, Los Angeles Angels of Anaheim, St. Louis Cardinals, and Seattle Mariners. He has also had several stints in the minors throughout his career.
Weaver, a graduate of Simi Valley High School in Simi Valley, California, was drafted by Detroit in the first round of the 1998 amateur draft and made his Major League debut a year later. He was their Opening Day starter in 2001 and 2002. In the 2002 season, he was traded to the New York Yankees in a three team deal that also involved the Oakland Athletics and Yankees prospects John-Ford Griffin, Jason Arnold, and Ted Lilly.
Weaver's time with the Yankees was very turbulent, bouncing in and out of the starting rotation. In Game 4 of the 2003 World Series, he allowed a 12th inning walk-off home run to Álex González.