Methods, systems, and computer-readable storage media for enforcing access control in encrypted query processing. Implementations include actions of obtaining a set of user groups based on the user credential and a user group mapping, obtaining a set of relations based on the query, obtaining a set of virtual relations based on the set of user groups and the set of relations, receiving a first rewritten query based on the set of virtual relations and a query rewriting operation, encrypting the first rewritten query to provide an encrypted query, and transmitting the encrypted query to at least one server computing device over a network for execution of the encrypted query over access controlled, encrypted data.