Ludwig may refer to:
- Ludwig (given name), a German name
- Ludwig (surname), a German surname
- Ludwig (film), a 1972 film by Luchino Visconti about Ludwig II of Bavaria
- Ludwig (cartoon), a 1977 animated children's series
- Ludwig Maximilian University of Munich
- Ludwig-Musser, manufacturer of Ludwig Drums and Percussion Instruments
- Ludwig von Mises Institute, a libertarian academic research organization
- Ludwig, later Ludwig & Company, a New-York-based piano manufacturer in the early 20th century
- Ludwig, a neo-nazi sigla (or nom de plume) used by the serial killers Wolfgang Abel and Mario Furlan
- Ludwig, from Emma & Ludwig, Popular, short-lived, viral cartoon show