Osbert de Longchamp or Osbert de Longo Campo (c. 1155 – before 1208) was an Anglo-Norman administrator. He was born in Wilton Castle, near Ross-on-Wye, Herefordshire, the son of Hugh de Longchamp. One of his brothers, William, was to become Chancellor of England and Bishop of Ely and another brother, Henry, Sheriff of Herefordshire and Worcestershire . He died before 1208. He had married Aveline, daughter of William de Allington.