Sir John Gage, 1st Baronet (died 3 October 1633) was an English baronet and landowner, and ancestor of the Viscounts Gage.
Gage was the son of Thomas Gage and Elizabeth Guilford. He married Penelope Darcy, a daughter of Thomas Darcy, 1st Earl Rivers and Mary Kitson, on 28 June 1611. They had eight children. Through his mother-in-law, Gage came into the possession of Hengrave Hall in Suffolk which would later become the seat of his descendants, the Rokewode-Gage baronets. He was made a baronet, of Firley in Sussex in the Baronetage of England, by Charles I on 26 March 1622. He was succeeded in his title by his eldest son, Thomas. His third son, Edward, was also created a baronet.