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Mark O'Brien

Open
Azantian Literary Agency·US

Agent profile summary

Represents
graphic novelsyoung adult contemporaryyoung adult science fictionyoung adult fantasyadult romanceadult non-fiction
Looking for
He loves lyrical prose, wordplay, and humor. He is especially excited about working with queer, neurodivergent, BIPOC, and disabled creators. In Young Adult, he seeks contemporary realistic fiction and science fiction/fantasy. In adult fiction, he wants queer romance. For nonfiction, he prefers accessible, queer, and neurodivergent works.
How to submit
Fill out his submission form via QueryManager. Submit one agent at a time, but can submit to up to three ALA agents if one passes. Include polished query letter, bio, and complete work.
View source·Agent page
Last checked 5 Jun 2026·Last verified: 5 Jun 2026
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Mark O'Brien is a literary agent at Azantian Literary Agency based in US. Their list focuses on genres including graphic novels, young adult contemporary, and young adult science fiction. Currently open to submissions, with responses usually within 8-12 weeks. Submissions via QueryManager. For current guidelines, check the agent's own submission page linked below.

Age Categories

Adult, Young Adult

Response Time

Usually responds within 8-12 weeks

Notable Clients

Becky Albertalli, Kelly Loy Gilbert, Victoria Aveyard, Ryan La Sala, Lydia Kang, J. Elle, Gabe Cole Novoa, Varian Johnson, Jessica Kim, Sayantani DasGupta

Notes

He does not represent horror, thrillers, picture books, novellas, poetry collections, or stories centering suicide, self-harm, intense violence, or gore.

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science fictionfantasyromancecontemporarybiographyyoung adult (ya)graphic novels

This profile was last verified on 5 Jun 2026. PairPi tracks UK literary agents' submission guidelines against their own websites. If you spot something wrong, please email hello@pairpi.com.