Ludwig Gerhard Wilhelm Roselius (born the June 2nd 1874 with Bremen - died the May 15th 1943 with Berlin) is a German patron of the beginning of the 20th century having made fortune in the trade of the Café. He is the founder of the company Kaffee Hag (Sanka Coffee in France).

As a patron, it supported several Artiste S of foreground, such as Paula Modersohn-Becker or Bernhard Hoetger. One also owes him celebrates it street Böttcherstraße of Bremen, become a tourist attraction because of his multiples Musée S, places of cultural activities and architectural audacities. Of preserving tendency on the political plan, it favorably accommodated the rise of the National-socialisme and the arrival of Adolf Hitler with the capacity, which it met besides in Bremen on a purely basis deprived in 1923.

An artistic gallery of Bremen bears its name today.