Transponder can refer to:

Canon[]

• A transponder beacon, a type of tracking device
• A transponder signal, used to identify starships
• An escape pod transponder, used for locating escape pods
• A masking transponder, used for obfuscating the location of a starship
• A radio transponder, used for communications

Legends[]

• A transponder beacon, a type of tracking device
• A transponder buoy, a navigational aid used in asteroid belts
• A hyperspace transponder, used for sending messages
• The IFF code or transponder code, used to identify starships

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