Cody Marshall Decker (born January 17, 1987) is an American former professional baseball player who played for the San Diego Padres of Major League Baseball (MLB). A right-handed power hitter, he played first base, third base, left field, and could catch.Playing for Santa Monica High School in California, Decker batted .490 and was Ocean League MVP his senior year. Playing college baseball for UCLA, he led the Pac-10 in home runs with 21 during his senior year in 2009, was a two-time All-Pac-10 selection, and ended his college career tied for 7th on UCLA's all-time home run list with 47.Decker was drafted by the San Diego Padres in the 22nd round of the 2009 Major League Baseball Draft. That summer he batted .354 and led the Arizona League (AZL) in home runs, RBIs (63-an AZL record), total bases (142-an AZL record), and slugging percentage (.717), and had the best fielding percentage for a first baseman. He was named the AZL Most Valuable Player and a Topps Post-Season All Star. In 2010, he was fourth in the California League in home runs (28) and seventh in RBIs (90). He was named an MiLB.com San Diego Organization All Star and MiLB.com Short-Season Best Hitter of the Year. In 2012, he was second in the Texas League in home runs (25) and third in slugging percentage (.540). That fall he played for the Israel national baseball team in the qualifying rounds of the 2013 World Baseball Classic. In 2014, Decker tied for fourth in the Pacific Coast League (PCL) in home runs (27), led all Padres minor leaguers in homers, and tied for third among Padres minor leaguers in RBIs (79). He was named a 2014 MiLB.com San Diego Organization All Star. In 2015, he was a PCL mid-season All Star, and an MiLB.com San Diego Organization All Star.
Decker made his Major League debut on September 14, 2015, after 2,566 at bats in 761 games over seven seasons in the minor leagues. At the time, his 154 home runs in the minors were the most by any MLB-affiliated minor league player since he was drafted in 2009. He played for Team Israel at the 2017 World Baseball Classic.