Jeff Samardzija, American baseball player

Jeffrey Alan Samardzija (; born January 23, 1985), nicknamed "Shark", is an American professional baseball pitcher who is currently a free agent. He played college baseball and football for the University of Notre Dame, and was recognized as a two-time All-American Wide Receiver. He was selected by the Chicago Cubs in the 5th round of the 2006 Major League Baseball Draft. He made his Major League Baseball (MLB) debut in 2008. He then played in the MLB for the Chicago Cubs from 2008 to 2014, the Oakland Athletics in 2014, the Chicago White Sox in 2015, and the San Francisco Giants from 2016 to 2020. He was an MLB All-Star in 2014.

He is related to the football players Bronco and Mike Samardzia.