Sir Robert Constable (c. 1522 – 12 November 1591), of Newark-on-Trent, Nottinghamshire, and the Minories, London, was an English soldier and Member of Parliament.

[3][b] Constable's elder brother Marmaduke who was about thirty-eight years of age, succeeded to the family property in 1558 when their father died.

His marriage to Christiana Dabridgecourt may have occasioned his decision to settle in Newark-on-Trent, where her first husband, Anthony Forster, had been an alderman.

Constable later acquired from the Hospital of St. Leonard the lease of a property known as the Spittal on the northern outskirts of Newark.

[6] It is also almost certain that he was the Sir Robert Constable listed by Segar as one of the 'lords and gentlemen' who had participated in Queen Elizabeth's Accession Day tournaments.

On 17 April 1570 he went into Scotland with Lord Hunsdon to Jedburgh, took Ferniehirst Castle, and burnt Hawick, Branxholme and Bedrule.

[8] He was knighted by Sussex at Berwick on 11 May 1570, together with William Drury, Thomas Manners, and George Carey,[9] who were captains in the army sent into Scotland on the following day to assist the Earl of Lennox in the Marian civil war at Glasgow.

And after the skirmish she did cause that we should pause awhile for the cooling of their pieces, and so to begin, which latter skirmish exceeded that the French ambassador and all the counsellors did greatly commend it .... And so every captain went with his company, [and] marched home to London that night.Constable reported further that the Queen had sent Sir Walter Raleigh to him with her thanks, and that later she had let him kiss her hand, saying that she had 'taken such order for me as I should not mislike of'.