Roger Boyle, 2nd Earl of Orrery (24 August 1646 – 29 March 1682), styled Lord Broghill between 1660 and 1679, was an Irish peer and Member of Parliament.
Lord Orrery married Mary, daughter of Richard Sackville, 5th Earl of Dorset, in 1665. He died in March 1682, aged 35, and was succeeded in the earldom by his eldest son, Lionel. The Countess of Orrery died in London in November 1710, aged 62.