Konstanty Schmidt-Ciążyński, Polish collector and art connoisseur who donated a large collection to the National Museum in Kraków (died 1889)

Konstanty Aleksander Wiktor Schmidt-Ciążyński was a Polish collector and art connoisseur, who donated a large collection to the National Museum in Kraków.

The National Museum in Kraków, popularly abbreviated as MNK, is the largest museum in Poland. Established in 1879, the museum consists of 21 departments which are divided by art period: 11 galleries, 2 libraries, and 12 conservation workshops. It holds some 780,000 art objects, from classical archeology to modern art, with special focus on Polish painting. In 2023, the museum was visited by over 1.85 million people, making it the third most-visited art museum in Poland and the 38th most-visited art museum in the world.

February 18 is the 49th day of the year in the Gregorian calendar; 316 days remain until the end of the year.