Sullivan as a Baby Name. Meaning and Origin of Sullivan

What is the meaning of the name Sullivan ?

The baby name Sullivan is a Male name , 3 syllables long and is pronounced /ˈsʌlɪvən/ (SULL-ih-vən).

Sullivan is Irish in Origin.

Sullivan is an Anglicized Irish surname turned given name, from Ó Súilleabháin, the patronymic of Súileabhán. The root elements are often explained as súil “eye” and dubhán, a diminutive of dubh “dark,” yielding the widely cited sense “little dark‑eyed one” or “black‑eyed.” Some scholars note alternative readings such as “hawk‑eyed,” but the dark‑eyed interpretation predominates.

Belonging to one of the great Munster clans, O’Sullivans were influential across Counties Kerry and Cork, and the surname became well known in the diaspora. As a first name, Sullivan rose in English‑speaking countries in the late 20th and early 21st centuries alongside the surname‑as‑given‑name trend; it now sees steady use for boys and occasional use for girls. Variants and related forms include Ó Súilleabháin, O’Sullivan, and older spellings like O’Sullavan; the colloquial Sully is a common nickname. Notable associations range from the boxer John L. Sullivan to composer Arthur Sullivan.