Ludus may refer to:
  • Ludus (ancient Rome) (plural ludi), several meanings around "play, game, sport, training"
  • Ludus gladiatorius, training camp for gladiators
  • Ludus Magnus, the major training camp for gladiators in Rome
  • Ludus Dacicus, a training camp in Rome for Dacian prisoners
  • Ludus latrunculorum, a strategy board game
  • Ludus duodecim scriptorum, a board game resembling backgammon
  • Ludi, public games held for the benefit and entertainment of the Roman people
  • Ludus (band), a British post-punk band 1978–1983
  • Luduș, a town in Mureș County, Romania
  • Ludus (love), a type of love/sex in the color wheel theory of love