The Tri-Cities Fever is a professional arena football team in the Indoor Football League. Their first season was in 2005 as an expansion member of the National Indoor Football League. Though they represent the entire Tri-Cities region, they play their home games exclusively at the Toyota Center in Kennewick, Washington. The Fever won their first "Indoor Bowl" championship (in their first season of operation) on July 30, 2005, defeating the Rome Renegades 47-31 in Kennewick.

After the 2006 season, the Fever announced they were leaving the NIFL. On September 4, it was confirmed that they were moving to United Indoor Football, along with the Billings Outlaws and River City Rage The league was expected to make an official announcement at a press conference sometime on the weekend of September 11, and was also hoping to add the Rapid City Flying Aces and Wyoming Cavalry soon. However, Tri-Cities, then joined the af2 which also holds former rival Everett and in-state foe Spokane and will be playing in that league. In the fall of 2009 the Fever joined the Indoor Football League.