A printing apparatus includes a storage unit configured to store print data including a password upon receipt of the print data, a receiving unit configured to receive a print instruction for the stored print data from a user, an authentication unit capable of performing user authentication, and a printing unit configured to perform printing without causing an authenticated user to enter a password in a case where an owner of the print-instructed print data matches the authenticated user, and to perform printing in response to a match between a password received from a user and the password included in the print data in a case where the owner of the print-instructed print data differs from the authenticated user, or in a case where a print instruction is received without user authentication by the authentication unit.