David Boyle, 1st Earl of Glasgow (c. 1666 – 31 October 1733) was a Scottish politician and peer. He was the last Treasurer-depute before the Union with England.

David Boyle was born circa 1666 at Kelburn Castle, Fairlie, in North Ayrshire, Scotland. He was the son of John Boyle of Kelburn (d. 1685), a Shire Commissioner to the Parliament of Scotland for Bute, and Marion Steuart, daughter of Sir Walter Steuart of Allanton.^[1][2]

From 1689 to 1699, Boyle was the Commissioner to the Parliament of Scotland from the Bute constituency. In 1697, he was invested as Privy Counsellor.^[3] He was Rector of Glasgow University from 1690 to 1691,^[4] as well as the last Treasurer-depute before the Union with England.^[5]

The Earl was a supporter of the Acts of Union, and after their passage, he sat as a Scottish representative peer from 1707 to 1710, serving alongside his first wife's nephew, John Lindsay, 19th Earl of Crawford (d. 1713). In Scotland, some claimed that union would enable Scotland to recover from the financial disaster wrought by the Darien scheme through English assistance and the lifting of measures put in place through the Alien Act of 1705 to force the Scottish Parliament into compliance with the Act of Settlement.^[6] As many Commissioners had invested heavily in the Darien Scheme, they believed that they would receive compensation for their losses of which Article 15 granted £398,085 10s sterling to Scotland, a sum known as The Equivalent, to offset future liability towards the English national debt, that was in essence used as a means of compensation for investors in the Company of Scotland's Darien Scheme.^[7] In total, £20,000 (£240,000 Scots) was dispatched to Scotland,^[5] of which £12,325, more than 60% of the funding, was distributed to Boyle and The Duke of Queensbury, the Commissioner in Parliament.^[8][9]

He was appointed Lord High Commissioner to the General Assembly of the Church of Scotland in 1706, and in 1707 to 1710. He was also Lord Clerk Register prior to 1714.^[4]

On 19 April 1687, Margaret Lindsay-Crawford (1669–1695), daughter of the Hon. Patrick Crawford of Kilbirney (1646–1681), who was the second son of John Lindsay, 17th Earl of Crawford (c. 1598–1678) and the brother of William Lindsay, 18th Earl of Crawford (1644–1698).^[10] Together, they had:

• John Boyle, 2nd Earl of Glasgow (1688–1740), who married Helen Morison, daughter of William Morison of Prestongrange.^[11]
• Patrick Boyle, Lord Shewalton (d. 1761), who did not marry.
• Charles Boyle, (1691/92–1770), who did not marry. He traveled to America and obtained a grant of land in Long Island, New York and later returned to England.

On 16 June 1697, Boyle married for the second time to Jean Mure (d. 1724), the daughter and heir of William Mure of Rowallan (d. 1700), who was the grandson of Sir William Mure of Rowallan (1594–1657). Before her death in 1724, they had three daughters, including:^[12]

• Lady Jean Boyle Mure of Rowallan (d. 1729), who married the Hon. Sir James Campbell (c. 1680–1745) the third and youngest son of James Campbell, 2nd Earl of Loudoun (d. 1684) and Lady Margaret Montgomerie, the daughter of Hugh Montgomerie, 7th Earl of Eglinton, in 1720.^[12]

In 1711, an engraving was made of The Earl by John Smith (1652-1743), based upon a portrait of him done by Jonathan Richardson (1665-1745).^[13]