Villa Hakasalmi (Finnish: Hakasalmen huvila, Swedish: Villa Hagasund), also known as Villa Karamzin,[1] is an architecturally and historically important 19th-century villa located in the Etu-Töölö district of central Helsinki, Finland.

[1] The villa is situated in a prominent position on Mannerheimintie, next to Finlandia Hall and opposite the National Museum.

[1] Designed by architect Ernst Lohrmann in the Empire style[1] and built in 1844–1846,[2] the villa was originally the summer residence of Senator and State Councillor Carl Johan Walleen [fi].

[1] In 1896, Walleen's step-daughter Aurora Karamzin sold the villa to the City of Helsinki, although she was allowed to continue living there until her death six years later.

[1][2] Since 1912, the villa has been occupied by the Helsinki City Museum,[1] as one of its five main exhibition venues.