The 2005 Major League Soccer season was the 10th season of Major League Soccer. It was also the 93rd season of FIFA-sanctioned soccer in the United States, and the 27th with a national first-division league.
At MLS Cup 2004, two new expansion teams were announced to start play in 2005, Real Salt Lake and Chivas USA. Since both teams were assigned to the Western Conference, the Kansas City Wizards moved to the Eastern Conference to maintain regional balance.
The Dallas Burn re-branded as FC Dallas and moved to the league's newest soccer-specific stadium when Pizza Hut Park opened on August 6, 2005.
The league returned to a 32-game schedule which marked the most games played since the 2000 season.
The regular season began on April 2, and concluded on October 16. The 2005 MLS Cup Playoffs began on October 22, and concluded with MLS Cup 2005 on November 13. For the second time in four years, the Los Angeles Galaxy beat the New England Revolution to win MLS Cup before a sell-out crowd at Pizza Hut Park.
The season began on April 2 and concluded with MLS Cup on November 13. The 12 teams were split evenly into two conferences. Each team played 32 games that were evenly divided between home and away. Each team played every other team in their conference four times, and every team in the opposite conference twice.
The top four teams from each conference qualified for the MLS Cup Playoffs. In the first round, aggregate goals over two matches determined the winners. The conference finals were played as a single match, and the winners advanced to MLS Cup. In all rounds, draws were broken with two 15-minute periods of extra time, followed by penalty kicks if necessary. The away goals rule was not used in any round.
The team with the most points in the regular season was awarded the MLS Supporters' Shield. Additionally, the winner of MLS Cup and the runner-up qualified for the CONCACAF Champions' Cup.
New England Revolution advance 3-2 on aggregate.
Chicago Fire advance 4-0 on aggregate.
Los Angeles Galaxy advance 4-2 on aggregate.
Colorado Rapids advance 5-4 on penalties (2-2 on aggregate).
