Louis Dorus (born Vincent Joseph van Steenkiste; 1 March 1812 – 9 June 1896) was a 19th-century French classical flautist.
Vincent-Joseph van Steenkiste, his real name, was the first French flautist to use the transverse flûte.
He perfected this instrument, and is at the origin of the "Dorus system".
He is the younger brother of Julie Dorus-Gras, the father of the singer and pianist Juliette Vansteenkiste called Dorus, known after her marriage as Rabaud-Dorus, and Henri Rabaud's grandfather.