Fitzhenry is an Irish Hiberno-Norman surname. It is patronymic as the prefix Fitz- derives from the Latin filius, meaning "son of". Its variants include the alternate forms "Fitz-Henry", FitzHenry and ‘’Fitz Henry’’, and the given name turned surname Henry. Another Irish variant is Fitzharris, and the surnames were often used interchangeably within the same family. Fitzhenry is rare as a given name, but may indicate that the person was descended from a female Fitz(-)henry, or that the person's father had Henry as a first forename. People with the name Fitzhenry include:
- Fitz Henry Warren
- Damien Fitzhenry
- Daniel Fitzhenry
- Louis Fitzhenry
- Meiler Fitzhenry
- Mrs. Fitzhenry