Gammel Strand 50 is a Neoclassical building overlooking Slotsholmens Kanal in central Copenhagen, Denmark.

The building was listed on the Danish registry of protected buildings and places in 1918. Notable former residents include the musician Holger Simon Paulli, chemist Christen Thomsen Barfoed and author Hans Vilhelm Kaalund- The site was formerly part of two separate properties.

[4] Christian Ulrich Kaas (1731-1803), a former harbour master in Copenhagen with title of chamberlain, resided in the building with his wife Mette Cathrine Lund (1747-1815) and one maid.

[6] Friderich Fischer, an auctioner, resided in the building with his wife Hedevig Møller, their two-year-old son and one maid.

This assumption is based on the fact that he died in Strand Quarter and that his widow operated the hatter's workshop on the site in 1840.

Fridericke Christine Marx (née Greiter, 1778-1855), a widow hatter, resided on the ground floor with her 28-year-old daughter Anine Victorine Franzine Marx, her 56-year-old brother Wendel Christine Greiter, her floor clerk Johanne Antoinette Geisler and the maid Mariane Catharine Keimer.

Johan Wigelsen Lassen, a master plumber, resided in the basement with his wife Sofie Frederikke Emilia (née Krøyer), their one-uear-old son Ferdinandt Emil Thorvald Lassen and his wife's sister Ane Magrethe Krøyer.

[15] Franciszkus Koclowski, a man with means, resided on the first floor with his wife Maria Anna Ræventlow, three unmarried children (aged 39 to 44) and one maid.

[16] Ane Maria Plenge (née Trinier, 1792-1880; daughter of brewer Andreas Tronier), widow of former pastor of Hørsholm Parish Johannes Wilhelm Pienge (1784-1829), resided on the second floor with her three children (aged 20 to 28) and one maid.

[18] Andreas Hansen, a brick-layer, resided in the garret with his wife Ane Johanne Marie Hal, their 12-uear-old daughter and two lodgers.

[19] Lars Jantzen, a shoemaker, resided in the garret with his wife Ane Chirstine Christensen, their five children (aged one to 13) and one lodger.

[23] Anna Charlotte Amalie Viborg (née Nielsen, 1778–185), Barfoed's mother-in-law, resided on the same floor with two unmarried women.

Hans Christian Hansen, a barkeeper, resided in the basement with his wife Inger Christine (née Nielsen) and their 8-year-old daughter.

Frederik Larsen, a candles and yarn retailer, resided in another part of the basement with his wife Elsebe Mammesen.