Methods, systems, and media for delivering manifestless streaming media content are provided. In some embodiments, the method comprises: receiving, from a user device, a request for a URL corresponding to a format of a live stream that is provided in a plurality of formats, wherein the live stream comprises a plurality of segments for each of the plurality of formats; resolving the request to a specific segment of the live stream based on the URL, wherein the resolving comprises: identifying the format of the live stream associated with the request from the plurality of formats based on the URL; and identifying a segment of the plurality of segments corresponding to the identified format to the user device in a response to the request.