Systems, methods and computer-readable media are disclosed for performing single sign-on processing between associated mobile applications. The single sign-on processing may include processing to generate an interaction session between a user and a back-end server associated with a mobile application based at least in part on one or more existing interaction sessions between the user and one or more back-end servers associated with one or more other mobile applications. In order to establish an interaction session with an associated back-end server, a mobile application may leverage existing interaction sessions that have already been established in connection with the launching of other associated mobile applications.