Embodiments disclosed herein provide systems, methods, and computer readable media for using a single sign-on proxy to regulate access to a cloud service. In a particular embodiment, a method provides receiving an authentication request from a user system directed to a SSO service and determining whether the authentication request satisfies at least one criterion for allowing access to the cloud service associated with the SSO service. Upon determining that the authentication request satisfies the at least one criterion, the method provides forwarding the authentication request to the SSO service.