OSullivans

OSullivans is a surname of Irish origin, anglicized from the Gaelic Ó Súilleabháin, meaning descendant of Súilleabhán, a personal name associated with the O’Sullivan lineage that historically held lands in the southwest of Ireland, especially in what is now County Cork. The name is among the more common Gaelic surnames in Ireland and has spread widely through emigration, becoming established in Ireland’s counties as well as in the Irish diaspora abroad.

In modern usage, OSullivans can refer to individuals bearing the surname as well as to businesses or brands that emphasize Irish heritage. The form without an apostrophe is often used in branding, fiction, or commemorative contexts and may appear in various countries with Irish communities.

Variants of the surname include O'Sullivan, Sullivan, Sulivan, and other spellings, reflecting differences in Anglicization and regional pronunciation. Bearers of the name have contributed to politics, sports, arts, and public life in Ireland and in communities around the world.

See also: O'Sullivan; Sullivan (surname); Ó Súilleabháin.