Catholicon

Catholicon may refer to:


 * Catholicon, the conventual church at the centre of an abbey
 * Katholikon, the primary church in an Orthodox or Eastern Catholic monastery
 * Catholicon (1286), book written in 1286 by Johannes de Balbis of Genoa (Summa grammaticalis quae vocatur Catholicon)
 * Catholicon (trilingual dictionary), Breton–Latin–French dictionary written in 1464 by Jehan Lagadeuc and printed in 1499
 * Catholicon (electuary), an alleged all-purpose cure (panacea) used in pre-modern medicine