Hallwyl Museum (Swedish: Hallwylska museet) is a Swedish national museum housed in a historical building.

Built in 1893–1898 to the design of Isak Gustaf Clason for Count Walther von Hallwyl and his wife, Wilhelmina. It was created to accommodate the office of the count and the extensive art collection of the countess.

The countess's catalog totaled 78 volumes, so you can imagine the amount of decorative art on display. Open to the public since 1938, the collection includes classic paintings, rare tapestries, silver, armor, weapons, antique musical instruments, glassware, even umbrellas and buttons (but only the finest ones). One of the three daughters became a sculptor and studied with the great Carl Milles. On the tour, you'll learn historical tidbits; for example, this house had a modern bathroom even before the royal palace got one. Ask about summer evening concerts presented in the central courtyard.

The museum is open to the public, and the Hallwyl Collection which is housed there encompasses some 50,000 objects.