Some demonstrative embodiments include apparatuses, devices, systems and methods of a wakeup packet response. For example, an apparatus may include circuitry configured to cause a first wireless device to transmit a frame comprising mapping information to map a plurality of Modulation and Coding Schemes (MCS) to a respective plurality of preamble lengths; generate a wakeup packet comprising a preamble having a preamble length of the plurality of preamble lengths corresponding to an MCS of a non-wakeup transmission from the first wireless device; and transmit the wakeup packet to a second wireless device.
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