Markéta Irglová (born 1988, Valašské Meziříčí, Czech Republic) is a Czech musician, songwriter and actress. As of 2007, she resides in Dublin.

Irglová began playing music at age seven, when her parents bought her a piano and sent her to lessons. When she was nine, her father bought her a guitar and she immediately began playing and learning songs by ear. She released an album, The Swell Season on Overcoat Recordings in (2006) with Glen Hansard of the Irish rock band The Frames, whom she had met when he was visiting Prague. Both Markéta and Glen will appear on "I´m Not There" soundtrack with their version of "You Ain't Goin' Nowhere" which is expected to be released on October 30, 2007.

She co-stars with Hansard in the 2007 movie Once, written and directed by John Carney. The movie won the World Cinema Audience Award for a dramatic film at the 2007 Sundance Film Festival.