Andrew Granger Heiton (born Andrew Heiton Granger; c. 1862 – 11 June 1927) was a Scottish architect.^[1] He was prominent in the late 19th and early 20th centuries. Several of his works are now listed structures.

Andrew Heiton Granger was born around 1862, the son of John Granger, a farmer in Pitcur, Perthshire. He was educated at Perth Academy and Fettes College.^[1]

Granger was articled to his uncle, Andrew Heiton, in 1876, became his assistant in the early 1880s, and eventually his partner.^[1][2]

Heiton became semi-retired around 1891, and Granger took over the practice.^[1]

Heiton died, of a suspected stroke, in 1894. Upon inheriting the business and the estate, Granger reversed his middle and last name, becoming Andrew Granger Heiton.^[1]

After serving in the First World War, Heiton had trouble producing drawings for clients due to health issues. He formed a partnership with John Sibbald McKay, who had previously worked as his assistant between 1913 and 1915. McKay continued the practice after Heiton's death.^[1]

In his younger years, Heiton was a prominent rugby player and cricketer, playing for Perthshire CC.^[1]

For a period, Heiton and his uncle lived at a double villa named Craigievar and Darnick (itself now Category B listed),^[13] on Kinnoull Terrace in Perth,^[14] and in one of the same name in Darnick, Roxburghshire.^[1]

He married Catherine Dunn, daughter of W. H. Dunn of Melrose. They had a daughter, Judy.^[1]

During the First World War, he served as a captain in the Black Watch. He was commanded with guarding the Highland Main Line between Perth and Inverness. It was a role that affected his health, due to his exposure to the wintry weather.^[1]