Square Peg Media Ltd (SPM) is a publishing and event management company based in London, England, founded in 2005.

The company was formed in 2005 by Linda Riley and her partner Sarah Garrett to take over the business of g3 magazine, a publication set up by Garrett and Lisa Knight in 2001.

Since acquiring this title, SPM has added annually to its publications, events, and brand extensions.

The company split its products in 2013, and Square Peg Media is now solely owned by Garrett.

Under the new company structure, Square Peg Media started other publications and events focusing on diversity and inclusion: