Hafnia Hodierna, Eller Udførlig Beskrivelse om den Kongelige Residentz- og Hoved-Stad Kiøbenhavn (English: Hafnia Hodierna, Or Detailed Description of the Royal Residence and Capital City Copenhagen) is an engraved architectural work on Copenhagen, published by the Danish architect Lauritz de Thurah in 1748.

It complements, with some overlap, de Thurah's other major work Den Danske Vitruvius, which focuses primarily on surrounding areas (such as Fredensborg), as well as the rest of Denmark.

Lauritz de Thurah had a military education and was a self-taught architect who learned much of what he knew by studying the inspiring buildings he saw on his travels outside Denmark between 1729 and 1731.

Hafnia Hodierna appeared in 1748, published at the King's expense, and printed by the best Danish printer at that time, Ernst Henrich Berling.

All the views are the work of the skillful drawer Johan Jacob Bruun, while the plans, sections and elevations were made by others, including de Thurah personally.