Sullivan

About Sullivan

Sullivan is an Irish surname name usually understood as “dark-eyed one.” Its three-syllable rhythm gives it more length than many surname names, while Sully provides an established short form. Its cultural connections range from Australian actor Sullivan Stapleton to the much-loved surname of Sulley in Monsters, Inc.

Meaning and Irish background

Sullivan is an English form of the Irish Ó Súileabháin. The surname refers back to the personal name Súileabhán, built from súil, meaning “eye,” and dubh, meaning “dark” or “black,” with a diminutive ending. This is the background to the interpretation “dark-eyed one.”

The personal name and surname are therefore connected stages of the same history. Modern Sullivan brings the surname into first-name use, preserving its recognizable Irish spelling in English. It also has a history as a given name in France, where it became more familiar from the 1970s.

In the United States, Sullivan was uncommon as a first name before the 1990s and then gained ground. Its present use belongs to the wider interest in surnames as first names, while its own family-name history is considerably older.

Sulley in Monsters, Inc.

James P. Sullivan is the full name of Sulley, the monster at the centre of Pixar’s Monsters, Inc. He begins as a celebrated professional Scarer in a city powered by children’s screams. His life changes when a small human girl, Boo, accidentally enters the monster world.

Sulley and his friend Mike Wazowski must care for Boo while navigating the factory’s rules and the belief that humans are dangerous. His protective relationship with her changes the meaning of success in the story, moving the focus from frightening children to understanding them.

Sullivan is the character’s surname, and Sulley is his familiar name. The connection is still especially visible to people considering Sullivan as a first name, since Sully is an established everyday shortening of it.

Sullivan Stapleton

Australian actor Sullivan Stapleton provides a given-name example. He plays Craig in Animal Kingdom, the 2010 crime drama about a teenager drawn into his relatives’ criminal world after his mother’s death.

Written and directed by David Michôd, the film won the World Cinema Grand Jury Prize at the 2010 Sundance Film Festival. This connection places Sullivan within a significant Australian film, alongside its more widely recognized animated association.

Pronunciation and American use

In English, Sullivan is pronounced SUL-ih-vun, with stress on the first syllable. Sully keeps that opening and adds an ee ending. The full form has a rolling three-syllable rhythm, with the strongest sound at the beginning.

Sullivan reached its largest annual American total for boys in 2025, with 1,083 births and a rank of #314. The same year, 74 girls received the name. American usage therefore includes both sexes, with boys accounting for the larger recent total.

How popular is Sullivan?

In 2025, Sullivan ranked #314 among boys in the United States, with 1,083 recorded uses. The U.S. birth records first list this spelling for boys in 1884; its largest annual count was 1,083 in 2025. Rankings count each spelling separately. They describe national use, so local familiarity can differ. The popularity chart shows whether the name has remained common, returned after a quieter period, or risen recently.