Ars Combinatoria may refer to one of the following.

• A logical method described by Gottfried Leibniz in his De Arte Combinatoria and attributed to Ramon Llull
• Ars Combinatoria, a Canadian mathematical journal
• Ars Combinatoria by the Renaissance composer Francisco Guerrero http://www.di-arezzo.co.uk/detail_notice.php?no_article=SUZER01567
• Ars Combinatoria for small orchestra (1981) by composer Milton Babbitt
• Ars Combinatoria (musical group) / Coro Ars Combinatoria, a chorus for polyphonic mediaeval music, directed by Claudio Astronio