Merrill Nisker (born 11 November 1966), better known by her stage name Peaches, is a Canadian electroclash musician and producer.

Born in Ontario, Peaches began her musical career in the 1990s as part of a folk trio, Mermaid Cafe. In 1995, she established a rock band, the Shit. That year she also released her first solo album, Fancypants Hoodlum. After moving to Berlin, Germany, she was signed to the Kitty-Yo label and released her second album, The Teaches of Peaches (2000). Touring as the opening act for bands like Marilyn Manson and Queens of the Stone Age, she subsequently released her third album, Fatherfucker (2003).

Peaches' songs have been featured in films such as Mean Girls, Waiting..., Jackass Number Two, My Little Eye, Drive Angry, and Lost in Translation. Her music has also been featured on television shows such as Orphan Black, Lost Girl, The L Word, South Park, Skam, The Handmaid's Tale, 30 Rock, True Blood, Fresh Meat, Full Frontal with Samantha Bee, The Boys, Sex Education, and Letterkenny, and has been used for the promotion of Dirt. Peaches has performed guest vocals on several songs, including "Oh My God" from Pink's album Try This, "We Don't Play Guitars" from Chicks on Speed's album 99 Cents, "My Girls" from Christina Aguilera's 2010 album Bionic (produced by — and co-written with — Le Tigre), and "Scare Me" from Major Lazer's 2013 album Free the Universe (also featuring Timberlee).

Peaches has been described as a feminist Queer icon.