Sir Henry Northcote, 5th Baronet (1710 – 28 May 1743), of Hayne in the parish of Newton St Cyres near Crediton in Devon, later of Pynes[1] in the parish of Upton Pyne, Devon, was a Member of Parliament for Exeter from 1735 until his death in 1743.

He was the only son and heir of Sir Henry Northcote, 4th Baronet (1655–1730) of Hayne and of Corfe in the parish of Tawstock in North Devon, by his wife Penelope Lovett, a daughter and co-heiress of Edward Lovett (1627–1702) of Corfe in the parish of Tawstock in North Devon, and of Liscombe in Buckinghamshire, long the seat of the Lovett family.

The Heraldic Visitations of Devon lists the founder of the family as Galfridus de Northcote, Miles ("knight"), living in 1103.

[5] After his marriage Northcote abandoned the family seat of Hayne, which sank to the status of a farmhouse, and moved to the Stafford seat of Pynes House, inherited by his wife, where his descendants remained until the 1990s.

[6] Amongst the lands he inherited from his wife was the manor of Iddesleigh[7] in Devon, from which in 1885 the statesman Sir Stafford Northcote, 8th Baronet took his title.