A novel antiseptic agent composition which has a wide antimicrobial spectrum and excellent antiseptic properties is provided. An antiseptic agent composition A contains a glycerin hydroxy fatty acid monoester that is an ester of glycerin and a hydroxy fatty acid having 8 to 18 carbon atoms, and a specific antiseptic agent such as an alkanediol. An antiseptic agent composition B contains the glycerin hydroxy fatty acid monoester and an aromatic antiseptic agent. An antiseptic agent composition C contains the glycerin hydroxy fatty acid monoester and a chelating agent.
