Greyfriars, Grayfriars or Gray Friars is a term for Franciscan Order of Friars Minor, in particular, the Conventual Franciscans. The term often refers to buildings or districts formerly associated with the order.

Former Friaries Greyfriars, Bedford Greyfriars, Beverley, Yorkshire, England Greyfriars, Bristol Greyfriars, Canterbury, earliest English Franciscan friary Greyfriars, Coventry Greyfriars, Dorchester Greyfriars, Dunwich, dissolved in 1538 some ruins remain as a Scheduled Ancient Monument Greyfriars, Gloucester, the ruins of a monastery, also a street named after the same Greyfriars, Ipswich, founded before 1236, virtually nothing remains Greyfriars, King's Lynn, the tower survives and is a prominent local landmark Greyfriars, Lincoln, former Franciscan friary; only the infirmary now survives Greyfriars, Leicester, original burial place of Richard III of England Greyfriars, London GreyFriars, Newcastle-upon-Tyne, founded 1327, dissolved 1539; rebuilt as private residence, demolished 1832 Greyfriars, Nottingham, founded 1224–1230, dissolved in 1539; nothing remains of the friary Greyfriars, Perth Greyfriars, Richmond Greyfriars, Shrewsbury Greyfriars, St Andrews, Fife, Scotland Greyfriars, Stamford Greyfriars, Winchelsea Greyfriars, Worcester Greyfriars Monastery, Stockholm

Churches Christ Church Greyfriars, in London Greyfriars Church, Reading Greyfriars Kirk, Edinburgh

Other Grey Friars F.C., former football club, c.1870-1880 Greyfriars, Bristol (office block) Greyfriars Bobby, a renowned Edinburgh dog Greyfriars bus station, former bus station in Northampton Greyfriars Kirkyard, a graveyard in Edinburgh Greyfriars, Oxford, a former Permanent Private Hall of the University of Oxford Greyfriars, Preston, an electoral ward in Lancashire Greyfriars, Wanborough, a house in Surrey, England Greyfriars, Worcester, a Grade I listed building in Worcester, England

In fiction Greyfriars School, a fictional school which is the setting for Frank Richards' Billy Bunter stories