John MacDonald of Glenaladale

John MacDonald of Glenaladale (29 September 1742 – 28 December 1810) was a Scottish-born soldier, land owner and colonizer. He played an important role in bringing Scottish settlers to Prince Edward Island, Canada.

MacDonald came to the settlement himself the following year by way of Philadelphia. In 1775, at the start of the American Revolution, he was made a company commander in the 2nd battalion of the Royal Highland Emigrants. His sister Helen took over management of the property on St. John's Island during his absence. In 1781, while MacDonald was still absent, Governor Walter Patterson confiscated some lots which had been in arrears for non-payment of quit-rents. Unaware that the lot which he owned was not affected, MacDonald went to London to protest; he was also upset because he had been interested in purchasing Lot 35. In the end, the Quit Rent Act of 1774 was repealed, the governor was recalled and the lands were returned to their former owners. MacDonald was also able to purchase Lot 35 from General Alexander Maitland.

In 2012, MacDonald was named a Person of National Historic Significance by the Canadian government.