Other mistake: He is referred to as Sir Ryan at the hotel. He isn't knighted until later, after they marry.
Jack Ryan: Shadow Recruit (2014)
1 other mistake
Directed by: Kenneth Branagh
Starring: Kevin Costner, Kenneth Branagh, Keira Knightley, Chris Pine
Factual error: Jack Ryan takes the enlisted oath, not the officer's oath, when commissioned into the Marines. (00:02:35)
Question: When Costner meets Jack Ryan for the first time he calls him John P. Ryan twice instead of Jack. Nowhere else in the movie did I here him referred to as John. Am I missing something? (00:08:15)
Answer: In all the original movies he was Jack his sons name was John so I thought he was the son of Jack.
Answer: This is true of all versions of the character - his name's officially John Patrick Ryan, but he always goes by Jack.