Albert Mellin (Helsinki, 30 January 1843 – 7 October 1886) was a Finnish architect who spent most of his career in Saint Petersburg, Russia.

He graduated with an architecture degree from the Helsinki Technical Real School (now Helsinki University of Technology) in 1866, and then moved to Saint Petersburg, where he also completed an architect's diploma at the Imperial Academy of Arts in 1870.

He lived in Saint Petersburg for sixteen years and worked in the architectural offices of Aleksandr Rezanov, Victor Schröter, Hieronymus Küttner and Andreas Hühn, among others.

[2][3] Mellin returned to Finland in 1882 and established his independent architectural practice.

In 1884–85 he built the so-called Mellin house, which he designed and where he himself resided, at Pohjoisranta 18 in Helsinki, which uses the kirpitšnyi stil ("brick style") common in St. Petersburg but rare in Finland.