Gregory Wayne Oden, Jr. (born January 22, 1988) is an American basketball player at the center position who is currently a free agent. Oden played basketball for Ohio State University for one season, during which the team was the Big Ten Champion and the tournament runner-up in the NCAA Men's Division I Basketball Championship.

On June 28, 2007, Oden was selected first overall in the 2007 NBA Draft by the Portland Trail Blazers. He underwent microfracture surgery of the knee in September 2007, and missed the entire 2007–08 NBA season as a result. He recovered and made his NBA debut on opening night 2008. On March 15, 2012 he was waived from the Trail Blazers after a long history of injuries.

Oden is currently the "Team Oden" spokesperson for Oregon Mentors, promoting mentoring for kids.

Oden was born in Buffalo, New York, and moved with his family to Terre Haute, Indiana at the age of nine. He attended Sarah Scott Middle School in Terre Haute, where he first played interscholastic basketball. He then relocated with his mother and brother and attended Lawrence North High School in Indianapolis, Indiana which he led to three consecutive Indiana Class 4A basketball championships before graduating in 2006. He was named Parade's High School Co-Player of the Year 2005 (along with Monta Ellis) and 2005 National Boys Basketball Player of the Year, becoming the first junior since LeBron James to be named such. He repeated as Gatorade National Boys Basketball Player of the Year in 2006. Oden was named the 2006 Indiana Mr. Basketball. He was also on the McDonald's All-American Team and played in the All-American game.