Aspects of a method and system for managing quality of service via a broadband gateway are provided. In this regard, a broadband gateway that supports one or more first QoS protocols may determine, based on communications with a plurality of communication devices, whether each of the plurality of communication devices supports the one or more first QoS protocols. The gateway may communicate a result of the determination to a content provider and/or service provider. In this manner, the content provider and/or service provider may determine whether to utilize one or more second QoS protocols to deliver content to a particular one of said plurality of communication devices based on whether said particular of communication devices based on whether said particular one of said plurality of communication devices supports the one or more first QoS protocols. The gateway may be operable to map between QoS protocols.