Sir Roger Martin, 3rd Baronet (c. 1689 - 12 June 1762) was son of Sir Roger Martin, 2nd Baronet and Anna-Marie Harvey.

He inherited his baronetcy from his father, who was the second Martin Baronet of Long Melford, upon his death in 1762.

On 5 June 1739 Sir Roger married Sophia Mordaunt (1719 - 22 Dec 1752), daughter of the honourable Brigadier General Lewis Mordaunt of Massingham and niece of Charles Mordaunt, 3rd Earl of Peterborough, and by her had one son and one daughter: Sir Roger died on 12 June 1762, when his title passed to his eldest son.