Margo Hayes (born February 11, 1998)[1] is an American professional rock climber from Boulder, Colorado.

[3] She joined Team ABC, a renowned youth climbing program in Boulder, where she was coached by Robyn Erbesfield-Raboutou.

[2] Hayes' grandfather, Dr. James Morrissey, led the first successful climb of the Kangshung Face on Mt.

In 2015, at the IFSC World Youth Championships in Arco, Italy Hayes won silver both in bouldering and lead, behind Janja Garnbret.

[7] On February 26, 2017, Hayes became the first-ever woman in history to climb a 9a+ (5.15a) graded route when she ascended La Rambla, in Siurana, Spain).