Daniel Vorländer (11 June 1867 – 8 June 1941) was a German chemist who synthesized most of the liquid crystals known until his retirement in 1935. Vorländer was born in Eupen in Rhenish Prussia. He studied chemistry at Kiel, Munich, and Berlin, after which he became a professor at University of Halle-Wittenberg. Vorländer served as a volunteer during World War I, during which he received the Iron Cross. He died in Halle.