- For other uses, see Defender.
The IKV Defender was a 23rd century Klingon Empire bird-of-prey starship, a E4-class escort in Klingon Defense Force service in the 2280s. In particular, Defender was built to the specifications of an E4B-subclass vessel. (TOS video game: Starfleet Command)
- No history or fate is established for this vessel as its name was randomly selected for an escort vessel by the game software.
| Ships named Defender | ||||||||||||||||||||||||||||||||||||||||||||||
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| Federation, Starfleet (prime reality) |
USS Defender (NCC-26227, Reliant-class) • USS Defender (Akira-class) • see also: Defender-class |  
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| Federation Starfleet (Kelvin timeline) |
see also: Defender-class | 
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| Klingon Empire, Klingon Defense Force | IKS Defender • IKV Defender • see also: Defender-class | 
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| Romulan Star Empire, Romulan Imperial Fleet | ChR Defender (23rd century) • RIS Defender • see also: Heavy Defender-class • Winged Defender-class | 
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