The Portland Timbers are an American professional men's soccer club based in Portland, Oregon. The Timbers compete in Major League Soccer (MLS) as a member club of the league's Western Conference. The Timbers have played their home games at Providence Park since 2011, when the team began play as an expansion team in the league.

The Cascadia Cup is the name of the trophy created in 2004 by supporters of the Portland Timbers, Seattle Sounders, and Vancouver Whitecaps, which is awarded each season to the best soccer team in the Pacific Northwest. The cup is named for the Cascadia region. The Timbers, Sounders, and Whitecaps have roots dating to the days of the original North American Soccer League. It was first contested in 2004, and was claimed by the Whitecaps. In 2011 the competition continued with the now Major League Soccer (MLS) sides Portland Timbers, Seattle Sounders FC, and Vancouver Whitecaps FC.