Moments where somebody realizes that "I Never Told You My Name" in Live-Action Films.
- In Avengers: Infinity War, Iron Man is unnerved when Thanos casually calls him Tony Stark.
- Double Subversion in City of Angels. Seth calls Maggie by name and when asked points out that she's wearing a nametag. Later, she pulls off the nametag and it only shows her last name.
- In The Count of Monte Cristo, Mercedes realizes the Count's true identity when she points out that he told her "Edmond Dantes is dead," even though she had never mentioned his last name in their earlier confrontation.
- Doctor Strange in the Multiverse of Madness: A slip of the tongue like this ends up outing the Big Bad's identity. When Strange asks Wanda to come to Kamar-Taj and help America Chavez, Wanda counter-offers that he bring America to her more open and friendly farm, referring to America by name in the process. After a beat, Wanda sighs as she realizes that Strange never named America at all during their conversation, and thus just revealed she's the one hunting her.
- Inverted in Dredd. Drug queen Ma-Ma brings in a group of corrupt Judges to help take out Judge Dredd and Judge Anderson. One of the corrupt Judges eventually comes across Dredd and claims to be back-up against the drug gang to lower Dredd's guard. Over the course of their conversation, Dredd notices that the other Judge is aware of Dredd's presence but never brings up Anderson's name, which is information that any real back-up would have been told about beforehand but which the gang does not know (Dredd's presence is known because he is The Dreaded among the criminals already). Dredd promptly attacks.
- Extreme Measures: As a doctor and several homeless men try to evacuate a desperately ill man from underneath a subway station, they are confronted by two mooks Impersonating an Officer, who order them to drop the man and come forward. They comply, until one of the men, says "Let's go, Doc." The doctor in question freezes in terror—despite repeatedly insisting that the ill man needed to be taken to the hospital, he never identified himself as a doctor—and realizes that the guys aren't cops.
- In False Positive, at Lucy's baby shower, Corgan calls her by her given name of Lucia. Lucy becomes suspicious as she had never shared it with Corgan. She is proven right.
- Fear, Inc.: During the traffic stop, Joe becomes suspicious when the sheriff refers to him as 'Joe Foster', despite Joe not having told him his name or given him his license.
- In Final Destination 2:You have to follow the signs... Kimberly.
How do you know my name? - In Invasion of the Body Snatchers (1978), Matthew desperately calls the police when the pods start growing in his backyard. They reply with his name before he gave it, leading him to suspect that the authorities are all pods.
- A variation played for laughs in Now You See Me. Merritt tries to invoke this trope by guessing Henley's name right on their first encounter only to be exposed by Atlas who notes that the name was written on her coffee cup.
- In the original The Nutty Professor, when Professor Kelp first transforms into Buddy Love, he meets up with Stella and calls her by name — when she insists she hadn't told it to him, he claims it's ESP. When someone calls him "Buddy" moments later he calls ESP again (though this is where he picks up the name for his new persona).
- Variation in Olympus Has Fallen. Secret Service agent Mike Banning runs into another survivor of the attack on the White House and fellow Secret Service agent who claims he's been hiding out the whole time. In their conversation the survivor mentions the villain's name...something Banning only was recently told by the impromptu government leaders he's in contact with and was only recently found out, and correctly deduces that the survivor is in fact a traitor working with the White House attackers.
- In Passengers (2008), Claire's neighbour lets slip the name of Claire's patient/love interest Eric, which makes Claire realise she is in on the plane crash cover up/conspiracy... but actually the neighbour is the ghost of Claire's dead Aunt pretending to be a neighbour, and she is trying to help Claire come to terms with the fact that she is dead and move on.
- Subverted in The Pelican Brief. When reporter Gray Grantham slips up and asks his informant "Garcia" if the other lawyers at his firm are giving him a hard time, Garcia flips out and asks how he could have known that he worked at a law firm as he never told him. Gray hurriedly (and truthfully) assures him that it was just an educated guess based on the things that Garcia has already told him, but it's too late—the already nervous Garcia is even more spooked and cuts off contact.
- In The Prophecy, Gabriel confronts Thomas as he's sitting in church. When Thomas questions how Gabriel knows his name, Gabriel dismissively tells him "You look like a Thomas." Gabriel does this many times. One of the more humorous times, he calls a waitress "Madge" — she reflexively looks down to see if she was wearing a name tag — she wasn't.
- Played with in a subtle moment early on in Red Eye, in which the villain ends up saying the name of the heroine's father in conversation with her and she doesn't notice that he'd just said a name she'd never told him. Probably a good many people in the audience didn't either.
- In The Rich Man's Wife, Josie (the wife in question) is being terrorized by her husband's killer, who is demanding an exorbitant sum of money from her and threatening to tell the police that she hired him to kill her husband (she didn't). She goes running to her ex-lover Jake, pleading for his help. He calms her down, assuring her that "Cole won't hurt you." She's grateful, until she suddenly realizes that she never told him the man's name - Jake hired the man to kill her husband so that Josie would come back to him.
- In Son of God and The Bible (2013), when Jesus calls Peter by his name in the boat, Peter doesn't say the trope, but his facial expression says it all.
- In The Sorcerer's Apprentice, Nicolas Cage's character does this to the young Dave. When Dave asks how he knows his name, Cage bursts out, "Because I can read minds!" After a Beat, he says normally, "It's on your backpack". However, he was telling the truth the first time.
- Strange Cargo: Hessler is the first to pick up on how there seems to be something otherworldly about Cambreau when Cambreau calls him by name, and Hessler notes that he never told Cambreau his name. As it turns out Cambreau is a Messianic Archetype and may actually be Jesus.
- In Sudden Death, one of the villains gives himself away by mentioning Darren's daughter by name when Darren had only told him he has a daughter and that she's being held hostage. He immediately Lampshades his mistake.Damn it. I always do things like that. You never said her name, did you?
- There's Something About Mary:
- Once Pat stalked Mary and gathered enough information on her, they eventually meet. Pat tells her he knows her name, which leads the viewer to believe he is going to mention the stalking.Mary: So what's your name?
Pat: Pat Healy.
Mary: Wanna know mine?
Pat: I already know it, Mary.
Mary: How'd you know that?
Pat: Because it's right there on your golf bag. - Ted is confused on how Dom knows about the zipper incident, since he never told him. Dom does a Hand Wave to this by saying he only lived four towns away. This seems like a minor throwaway moment, but comes back later when Dom is revealed to be "Woogie," Mary's high school boyfriend prior to meeting Ted, which also shows how he knew about said incident.
- Once Pat stalked Mary and gathered enough information on her, they eventually meet. Pat tells her he knows her name, which leads the viewer to believe he is going to mention the stalking.
- Possibly subverted in Thunderball when the Bond girl Domino demands to know how Bond knew that was her name (or rather, her nickname); he says it is on the bracelet on her ankle. The "possible" part is that it's not clear he hasn't read up on her already, since the reason he is in the Bahamas is following a lead about her recently murdered brother, though it didn't lead to her directly.Domino: My my, what sharp eyes you have.
Bond: (as she walks away) Wait till you get to my teeth. - In The Truman Show, Truman's attempt to drive out of town with his wife ends when an unknown cop tells them the road is closed. However, the cop then addresses Truman by name without ever being told his name or shown any ID. This immediately lets Truman know something is up.
- In The Testaments: Of One Fold and One Shepherd, Jacob is the Stalker with a Crush on Laneah. After he gets caught, they exchange this dialogue:Laneah: You did not ask my name.
Jacob: I know your name. - In Timber Falls, Mike knows there is something wrong when he wakes up on Ida's couch and she addresses him as 'Michael'. He never told her his name, and the only way she could know it was if she'd read his license or credit cards, which were in is wallet which he left in the tent by the lake.
- In Violent Night the thieves are all using Christmas-themed codenames, and are unnerved when the strange man dressed as Santa who wasn't on the staff list calls them by their real ones - and also knows what they wanted for Christmas as children, whether they did or didn't get it, and why.
- Wrong is Right. Sally Blake (ostensibly a journalist, but actually a CIA agent) greets Arms Dealer Helmet Unger by name, claiming she got it from the business cards he's passing out. Unger looks at his card which has "Europa Trading Center" and a phone number, but no name.
