Some demonstrative embodiments include apparatuses, systems and/or methods of communicating in an awareness cluster. For example, an apparatus may include circuitry configured to cause an awareness networking device to communicate during one or more Discovery Windows (DW) of an awareness cluster; communicate with one or more devices of at least one data path group, the data path group comprising devices of the awareness cluster and having a common schedule of radio resources (SRR); and communicate with one or more devices of at least one service data group, the service data group comprising devices of the data path group being subscribed to a common service.