Caitlin Elizabeth Marnell (born September 10, 1982) is an American writer and media commentator based in New York City.

After overdosing on Xanax and Ambien[3] in her apartment and spending two weeks at Bellevue in 2011, she said she "vowed never, ever to lie to a job again: they could take me or leave me with my drug stuff.

Her writing was "shrouded in irreverent yet deeply personal anecdotes" with frequent references to her drug use, hospitalizations, and mental illnesses.

[5] Her position was controversial – Anna David at The Fix wrote that Marnell "wins applause for her bravery" in speaking openly about drug use, while Hamilton Nolan at Gawker described her as a "dust-smoking suicidal narcissist downtown swinger beauty columnist".

[11] In October 2019 Marnell released Self-Tanner for the Soul [12] with Audible, recounting her European escapades with XL Airways UK.