U tří mouřenínů, Cultural monument in Karlovy Vary, Czech Republic.

U Tří mouřenínů is a four-storey terraced house at Tržiště 377/25, rebuilt in Viennese Secession style in 1909–1910 by architect Karl Heller, with Friedrich Ohmann designing the facade. The five-axis street front has a broken entrance portal flanked by reliefs of two Moors and Goethe memorial plaques; the first floor is glazed with a stained-glass panel of three Moors, and a full-width loggia with wrought-iron railing runs across it. Small balconies sit before the outer and middle windows of the second and third floors, and rococo stucco transferred from the earlier house in 1910 fills the spaces between the first-floor windows.

The original house was built in 1715 and owned for generations by the Heilingötter family, whose negligence caused a fire on 23 May 1759 that destroyed two-thirds of Karlovy Vary's 224 houses. Josef Heilingötter rebuilt it in brick in Rococo style in 1759–1760. In 1899 Franz Stüdl of Vienna bought it and, after ten years of local resistance, had it demolished in 1909; the present Viennese Secession house by Karl Heller, with a facade by Friedrich Ohmann, was built in 1909–1910.

The house name, U Tří mouřenínů (Zu den Drei Mohren), dates from 1715 and refers to the three Moors carved on the portal by Karl Heller. Two marble plaques beside the original carved wooden door recall Goethe's stays; one reads "Těmito dveřmi vstupoval Goethe." The house was renamed Dagmar after 1945, but the name never took hold.

The building sits centrally near St Mary Magdalene's Church and the Hot Spring, making it easy to visit nearby attractions on foot. Parking is available in the surrounding area for those arriving by car.

The house kept its name through a 1909 demolition: architect Friedrich Ohmann had the Rococo stucco decoration transferred from the 1715 building onto the new Secession facade, and the carved wooden entrance door was preserved. Two marble plaques beside it read "Těmito dveřmi vstupoval Goethe".