Helgo Zettervall

Helgo Nikolaus Zettervall, older spelling Zetterwall, (21 November 1831 – 17 March 1907) was a Swedish architect and professor of the Royal Swedish Academy of Arts. He is best known for his drastic restorations of churches and other buildings around Sweden.

Zettervall was a proponent of Gothic Revival architecture and is most commonly associated with his design of the plans for the extensive restoration of Lund Cathedral during the late 19th century.