Abstract: A computer-implemented method for managing access to services provided by wireline service providers may include (1) receiving at least one request from a subscriber device to authorize access to at least one service, (2) authenticating the subscriber device with an access gateway of a wireline service provider based at least in part on the request, (3) generating a unique session identifier that uniquely identifies the subscriber device during a service-access session, (4) delivering the unique session identifier to a management server of the wireline service provider to enable the management server to authenticate the subscriber device with at least one network device that provides the service based at least in part on the unique session identifier, and then (5) facilitating access by the subscriber device to the service provided by the network device during the service-access session. Various other systems, methods, and computer-readable media are also disclosed.