Gustav Gull (December 7, 1858 in Altstetten – June 10, 1942 in Zürich) was a famed Swiss architect.
He came from a family of architects. He studied architecture at the Polytechnic of Zürich.
He is buried in Zürich.
He designed the main post office of Lucerne.
He designed the Swiss National Museum, and was involved in the construction of the Urania complex in Zürich that comprises Amtshaus I-IV at the Lindenhof hill, as well as the Stadthaus Zürich at Münsterhof, Urania Sternwarte and Waisenhaus Zürich at Lindenhof hill, and the tower of Predigerkirche Zürich that was built after Gull's plans by Friedrich Wehrli.