Carlos Javier Muñiz (born March 12, 1981) is an American former Major League Baseball relief pitcher.
Muñiz made his major league debut on September 25, . He threw 1.1 innings and gave up 2 earned runs.
Muñiz was called up to the Mets on May 27, , to replace injured pitcher Matt Wise in the bullpen. He was then sent back down to the New Orleans Zephyrs, which was the Mets Triple-A affiliate prior to 2009. He was then recalled on June 25 when Claudio Vargas was designated for assignment.