Continuity mistake: When Jack Ryan is in his office and hacks into Ritter's computer, he is trying to print out some files before Ritter deletes them. His printer fails to print, and after pulling out the paper drawer of his printer he discovers it is out of paper. Immediately, without closing the drawer, he quickly opens the door to the cabinet beneath the printer, grabs some paper, and the very next shot shows the printer paper drawer has mysteriously closed, so he has to pull it out again to add the paper.
Continuity mistake: During the scene in which the convoy of CIA Suburbans is ambushed from the rooftops, Harrison Ford and the remaining men get back in a Suburban that has already been hit and the driver's door is missing. Ford hurriedly jumps into it and begins backing out of the ambush. Even though he didn't buckle it, a seat belt is visible around him. When he jumps out of the Suburban, he doesn't unbuckle the seat belt.
Continuity mistake: A Hawker 125 executive jet lands with the guys who are eventually involved in the street ambush. The hangar scene where Ryan greets them getting off the plane has them deplaning from a larger Gulfstream executive jet.
Continuity mistake: When Ryan confronts Ritter about Reciprocity in the office, the view switches from behind Ritter to in front of him. Look at his suit coat collar. When he pulls the President's letter from his safe, the collar is fine. As the view changes, the coat collar is flipped up on the left side.