Collen Warner (born June 24, 1988) is an American professional soccer player who plays as a midfielder.

Warner attended Denver East High School, played club soccer for Colorado Rush, and spent time training with English Premier League players and coaches at the Liverpool Youth Academy in 2002, before playing four years of college soccer at the University of Portland.

During his college years Warner also played for both Colorado Rapids U-23 and Portland Timbers U23s in the USL Premier Development League.

[4] Warner went on a short-term loan to USSF Division 2 club AC St Louis on July 28, 2010.

On June 30, 2020, Warner signed a one-year deal with his hometown team Colorado Rapids.