Osbert de Longchamp or Osbert de Longo Campo (born 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

William Longchamp

William Longchamp , sometimes known as William de Longchamp or William de Longchamps, was a medieval Lord Chancellor, Chief Justiciar, and Bishop of Ely in England. Born to a humble family in Normandy, he owed his advancement to royal favour. Although contemporary writers accused Longchamp's father...

, was to become Chancellor of England and Bishop of Ely and another brother, Henry

Henry de Longchamp

Henry de Longchamp or Henry de Longo Campo was an Anglo-Norman administrator.He was born in Wilton Castle, near Ross-on-Wye, Herefordshire, the son of Hugh de Longchamp...

, Sheriff of Herefordshire

High Sheriff of Herefordshire

The Sheriff is the oldest secular office under the Crown. Formerly the Sheriff was the principal law enforcement officer in the county but over the centuries most of the responsibilities associated with the post have been transferred elsewhere or are now defunct, so that its functions are now...

 and Worcestershire

High Sheriff of Worcestershire

This is a list of Sheriff and since 1998 High Sheriffs of Worcestershire.The Sheriff is the oldest secular office under the Crown. Formerly the Sheriff was the principal law enforcement officer in the county but over the centuries most of the responsibilities associated with the post have been...

 .

Osbert was appointed High Sheriff of Yorkshire

High Sheriff of Yorkshire

The High Sheriff of Yorkshire was an ancient High Sheriff title originating in the time of the Angles, not long after the invasion of the Kingdom of England, which was in existence for around a thousand years. A list of the sheriffs from the Norman conquest onwards can be found below...

 for 1190 by his powerful brother William in place of the troublesome John Marshall and Sheriff of Westmorland

High Sheriff of Westmorland

Westmorland in North West England no longer exists as a county, the original core of it having merged into the modern district of Eden within the county of Cumbria....

 at the same time. In 1193 he was appointed Sheriff of Norfolk

High Sheriff of Norfolk and Suffolk

This is a list of High Sheriffs of Norfolk and Suffolk. The High Sheriff is the oldest secular office under the Crown and is appointed annually by the Crown. He was originally the principal law enforcement officer in the county and presided at the Assizes and other important county meetings...

until 1195. William de Longchamp later lost power and Osbert and Henry their shrievalties.

He died before 1208. He had married Aveline, daughter of William de Allington.