The 2012 Sporting Kansas City season was the seventeenth season of the team's existence in Major League Soccer and the second year played under the Sporting Kansas City moniker.

Preparations for the 2012 Major League Soccer season began only a day after the 2011 MLS Cup. On November 21, 2011, Ryan Smith was traded to Chivas USA for 1st and 3rd round draft picks in the 2012 MLS Supplemental Draft. Later the same day, all MLS teams were required to submit a list of 11 protected players for the 2011 MLS Expansion Draft to be held for the newly formed Montreal Impact. The club chose to protect Davy Arnaud, Matt Besler, Teal Bunbury, Aurélien Collin, Roger Espinoza, Kei Kamara, Chance Myers, Jimmy Nielsen, Júlio César, C. J. Sapong, and Graham Zusi.

During the expansion draft on November 23, the Montreal Impact selected unprotected Sporting leftback Seth Sinovic. Later the same day, Sporting KC waived Scott Lorenz, Miloš Stojčev, Craig Rocastle, and Jéferson. The following Monday (November 28), Sporting traded team captain Davy Arnaud to the Montreal Impact for Sinovic and allocation money. The club also announced that starting goalkeeper Jimmy Nielsen signed a contract extension through the 2013 season, with an option for the 2014 season. On November 29, Sporting KC acquired Paulo Nagamura from Chivas USA for the 1st round supplemental draft pick that was part of the November 21 Ryan Smith trade.

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