James Murray, 2nd Duke of Atholl KT PC (28 September 1690 – 8 January 1764), styled Marquess of Tullibardine between 1715 and 1746, was a Scottish peer, and Lord Privy Seal.
Atholl was born in Edinburgh, Scotland, the third son of John Murray, 1st Duke of Atholl, by Lady Catherine, daughter of William Hamilton, Duke of Hamilton.
In 1712, he was made captain of the grenadier company of the 1st Foot Guards. On the attainder in 1715 of his elder brother, William Murray, Marquess of Tullibardine, for taking part in the Jacobite rising, an act was passed by parliament vesting the family honours and estates in him as the next heir. After the conclusion of the rebellion, he appears to have gone to Edinburgh to represent in as favourable a light as possible to the government the services of his father, in order to procure for him a sum of money in name of compensation.
At the election of 1715, he was chosen M.P. for Perth, and he was reelected in 1722. He succeeded to the peerage on the death of his father in 1724; and in 1733 an act of parliament was passed to explain and extend the act of 1715, by providing that the attainder of William, marquis of Tullibardine, should not extend to prevent any descent of honour and estate to James, duke of Atholl, and his issue, or to any of the issue or heirs male of John, late duke of Atholl, other than the said William Murray and his issue.
In June 1724, he was made Lord Privy Seal, succeeding Lord Ilay, and on 21 September, he was chosen a representative peer. He was reelected in 1734, and during the same year was invested with the Order of the Thistle. As maternal grandson of James Stanley, 7th Earl of Derby, Atholl succeeded to the sovereignty of the Isle of Man, and to the ancient barony of Strange, of Knockyn, Wotton, Mohun, Burnel, Basset, and Lacy, on the death of James, 10th Earl of Derby, in 1736.