John is a first name, and may refer to the following cast and crew:
- John Colicos, the actor who portrayed Count Baltar in the Original Series.
- John Dullaghan, the actor who portrayed Doctor Wilker in various Original Series episodes.
- John Dykstra, the special effects supervisor of the Original Series' pilot episode, "Saga of a Star World", as well as the "The Gun on Ice Planet Zero".
- John Fink, the actor who portrayed Doctor Paye in the Original Series pilot, "Saga of a Star World".
- John Heard, the actor who portrayed Commander Barry Garner in the Re-imagined Series episode, "The Captain's Hand".
- John Ireland Jr., the writer with a "story by" credit for the Original Series two parter, "Gun on Ice Planet Zero".
- John Mann, the actor who portrayed Major Jackson Spencer in the Miniseries, as well as Linden in the Re-imagined Series episode, "Black Market".
- John Pyper-Ferguson, the actor who portrayed Captain Cole "Stinger" Taylor in "Pegasus" and in "Resurrection Ship, Part I".
- John Williams, the actor who portrayed an unnamed statesman in the Original Series two parter, "War of the Gods".
- John Zenda, the actor who portrayed Zed in the Original Series episode, "Murder on the Rising Star".
John may refer to the characters of:
- John, a Being of Light introduced in the Original Series episode, "Experiment in Terra".
- John "Snitch" Burke, a Viper pilot on Galactica in the Re-imagined Series episode, "The Passage".
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