Quill or Quille is an anglicised version of the Irish surname " Ó Cuill" Coll, Coill, and O'Coill (Ó Coill), all of which mean wood, forest or shrub hazel tree.
The Coill clan are believed to be a bardic family from Munster, particularly counties Kerry and Cork.
The Irish surname has also been anglicised as Woods.
Notable people with the surname include: