John III, Count of Ligny (died 1 July 1576) was the eldest son of Count Anthony II and his wife Margaret of Savoy.
He arrived in Edinburgh on 2 November 1566 as the ambassador of Savoy and was lodged in Henry Kinloch's house in the Canongate near Holyrood Palace.
He visited Craigmillar Castle to meet Mary, Queen of Scots on 20 November, and went to Stirling Castle on 12 December for the baptism of Prince James, escorted by George Seton, 7th Lord Seton.
He gave the queen a necklace of pearl and rubies and earrings.
[1] John married Wilhelmina (d. 1592), the daughter of Duke Robert IV of Bouillon.