Tomi Um is a Brooklyn based artist who spends most of her waking hours working on editorial and advertising illustration.


She is best known for her advertising illustrations, including the very popular Casper Mattress ads found throughout the New York City subway. Her illustrations have appeared in Time Magazine, the New York Times, the Wall Street Journal, Billboard Magazine, the Hollywood, the Washington Post, and many more.


With the few waking hours that she’s not illustrating, Tomi loves going to see operas at the Met, eating noodles, and spends summer and Christmas in Helsinki.

Tomi Um is represented by Holly McGhee.

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