John Halkerston was a Scottish architect prominent in the 15th century. He was Master of Works at Trinity College Kirk, Edinburgh, in the 1460s. Around the same time, he worked on St John's Kirk, in Perth, whose northwest porch is now named "Halkerston Tower" in his honour. The door of the tower is known as the "Bride's Entrance" due to its use during weddings today.
|Design||St John's Kirk, Perth|
- Historic Environment Scotland. "Chalmer's Close, Trinity College Church Apse, Including Carved Stone Fragments and Boundary Walls (Category A Listed Building) (LB25747)". Retrieved 2 March 2022.
- Perth: The Archaeology and Development of a Scottish Burgh – David P. Bowler, Tayside and Fife Archaeological Committee, Perth, 2004, p. 21
- Historic Environment Scotland. "St John's Kirk, Kirkside, St John's Place, St John Street (Category A Listed Building) (LB39300)". Retrieved 2 March 2022.
- Ordnance Gazetteer of Scotland: A Graphic and Accurate Description of Every Place in Scotland, Francis Hindes Groome (1901)
- "A walk around the exterior of the Kirk" – St John's Kirk official website
- "A walk around the Stunning Interior of the Kirk" – St John's Kirk official website
- The History of the Collegiate Church and Hospital of the Holy Trinity and the Trinity Hospital, Edinburgh, 1460–1661 (1911), p. 20