2010–12 Southeastern Conference realignment

The 2010–12 Southeastern Conference realignment refers to the Southeastern Conference (SEC) dealing with several proposed and actual conference expansion and reduction plans among various NCAA conferences and institutions. Moves that involved the SEC were a relatively small part of a much larger NCAA conference realignment that began in the 2010–11 academic year and continued through the first half of 2014. The SEC was one of the least impacted conferences, as no member schools announced plans to join other conferences, while two schools from the Big 12 Conference joined the conference as all-sports members. Several other schools have been rumored as potential expansion candidates.

Although realignment within the NCAA continued into 2013 and 2014, the next credible rumors involving either current or potential future SEC members did not surface until 2021, when Big 12 members Oklahoma and Texas were widely reported to have seriously discussed a potential move to the SEC, soon followed by both schools receiving and accepting invitations to join the SEC no later than 2025.