Ulrik Adolph Plesner, usually known as Ulrik Plesner, (May 17, 1861, in Vedersø – November 22, 1933, in Skagen) was an innovative Danish architect who designed in a National Romantic style at the beginning of the 20th century.
He is remembered in particular for his influence on the style of architecture practiced in Skagen in the north of Jutland.