Jeremy Robert Hellickson (born April 8, 1987) is an American professional baseball pitcher for the Philadelphia Phillies of Major League Baseball (MLB). He previously played for the Tampa Bay Rays and Arizona Diamondbacks. Following the 2011 season, Hellickson was named American League Rookie of the Year. Hellickson is nicknamed "Hellboy" by local fans and media.

Hellickson was born in Des Moines, Iowa and attended Hoover High School.

Hellickson was drafted by Tampa Bay in the fourth round of the 2005 Major League Baseball draft. Baseball America rated him as the 18th best prospect in all of baseball going into the 2010 season. He was selected to play in the 2010 All-Star Futures Game and was the starting pitcher for U.S. team.

On August 2, 2010, Hellickson made his major league debut against Minnesota Twins. During his debut, he held the Twins to two runs over seven innings. He struck out six while walking two. He was optioned back to the Triple-A Durham Bulls after the start. He was once again recalled to the majors on August 10 to take the spot of Wade Davis in the rotation. He made his second career start that day against the Detroit Tigers at Comerica Park, earning his second career victory after pitching seven shutout innings with three hits, seven strikeouts and no walks as the Rays won 8–0.

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