* FakeIrish: Only three actors in ''Film/PatriotGames'' were actually Irish: Richard Harris, Patrick Bergin and Jonathan Ryan. This means all of the other Irish characters were this. Englishwoman Polly Walker plays the IRA terrorist Annette, though it is revealed in film that Annette is British-born (presumably of Irish ancestry).
* TheOtherDarrin: HarrisonFord takes over the role of Jack Ryan from Alec Baldwin. Ford had been considered to play Ryan in ''Film/TheHuntForRedOctober'' before Baldwin was cast.