Grehan is a surname. Notable people with the surname include:
- Ceara Grehan, Northern Irish theatrical and opera singer
- Derry Grehan (born 1957), Canadian guitarist
- Francie Grehan, Gaelic footballer
- James Grehan (disambiguation), multiple people
- Martin Grehan (born 1984), Scottish footballer
- Stephen Grehan (born 1971), Irish retired hurler
Surname listThis page lists people with the surname Grehan. If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link. Category: