Hayley Gene Penner (born November 5, 1985) is a Canadian singer, songwriter and author based in Los Angeles.

She is best known for the songs she has written for artists including The Chicks, Sabrina Claudio, Lennon Stella, Charlotte Lawrence and The Chainsmokers.

[4][5] At age 17, Penner was hosting CBC children's programming and lending her voice to commercials for companies like Cheez Whiz, McDonald's, Kraft Dinner and Hamburger Helper.

[16][17][18] Alongside her debut album, Penner wrote a memoir, also titled People You Follow, about her experience as a female songwriter in the music industry and the hidden, toxic side of the business.

[16][17][18] The book, released in fall 2020, was described by Lena Dunham as "a fucked up Alice in Wonderland journey down the rabbit hole of LA’s most subtly toxic industry, and it’s also funny.