History Main / WhosYourDaddy

* ''Series/{{Degrassi}}'': When Clare finds out she's pregnant, she figures the father is Drew, a one night stand, because he was the last guy she slept with. A few weeks later at her ultrasound, she finds out she's further along than she thought, meaning the father is actually her ex-boyfriend Eli.

* In the ''LifetimeMovieOfTheWeek'' (of course) ''The Secret She Carried'', a woman is raped and later finds out she's pregnant, but is uncertain if her husband or the rapist is the father. Adding to the drama is that by the time the pregnancy is advanced enough for her to do a paternity test, it will be too late for an abortion should the rapist be the father. As it turns out, her husband is the father after all, but in true ''{{Creator/Lifetime}}'' style, it doesn't stop the rapist from believing otherwise and promptly stalking and terrorizing her in an effort to claim "his" child.
* ''Series/{{Lost}}'': Sun had an affair before coming to the island, and had been told Jin was infertile. Thus Sun is not certain Jin is her baby's father until a sonogram in "D.O.C." shows the baby was conceived on-island (and Juliet reveals the island increases sperm count). The issue ''seems'' to be settled, but some fans suspected Michael to actually be the father. But in the episode "Ji Yeon", [[spoiler: Sun gives birth to a baby girl that is completely Korean looking -- not a lick of mixed racial heritage in her.]]

* On ''Series/TheSecretLifeOfTheAmericanTeenager'', there were two candidates for the father of Anne's son: her ex-husband George and her new boyfriend David. David had been told he was sterile, but George had gotten a vasectomy years earlier, so everyone assumed that David was, in fact, ''not'' sterile and the father. Then George confessed that he had lied about getting a vasectomy. This led David to conclude that George was the father. David [[PutOnABus broke up with Anne and left]] and that was that. We [[spoiler: are initially led to believe that George is the father, but we later find out it's David.]]

** Was Susannah's baby from Eddie, or that [[HornyDevils incubus]] who raped her? [[spoiler: It was the incubus, say sorry.]]

* The Creator/TinaFey movie ''Film/BabyMama'' has a rare example of "who's your mommy" thanks to IVF.

* In ''Film/{{Mamma Mia}}'', Donna Sheridan had quick affairs with three different men, all of whom might be the father of her child, Sophie. HilarityEnsues when Sophie invites them all to her wedding. Although the biological father is never revealed -- according to the creators [[spoiler:it's Bill]] -- they each agree to be 1/3 a father to her.
* ''Film/ThreeGenerations'': It turns out [[spoiler:Ray's]] birth father is not really [[spoiler:Craig]], but [[spoiler:Craig's brother Matthew]], as a result of [[spoiler:Maggie's]] cheating with him. Due to this, [[spoiler:Craig]] broke off contact with them. Worse yet, everyone ''but'' [[spoiler:Ray]] knew, and didn't tell him.

[[Film/KindergartenCop …and what does he do?]]

* [[TheUnReveal The truth is never revealed, leaving everyone uncertain.]]

See also GeneHunting, in which ''the child'' seeks his or her parentage. Nothing to do with the stock phrase used when [[BringIt one person taunts another in a fight.]] Also to not be confused with the [[VideoGame/WhosYourDaddy video game of the same name]].

* ''{{Series/Outlander}}'': Brianna isn't sure whether her baby is Roger's, or fathered by her rapist, since the rape took place on the same day as her having consensual sex with Roger. However, they later realize that he's Roger's son, as he grows the same mole.

* ''{{Series/Outlander}}'': Brianna isn't sure whether her baby is Roger's, or fathered by her rapist, since the rape took place on the same day as her having consensual sex with Roger. However, they later realize that he's Roger's son, as he grows she same mole.

* ''{{Series/Outlander}}'': Brianna isn't sure whether her baby is Roger's, or fathered by her rapist, since the rape took place on the same day as her having consensual sex with Roger.

* ''Series/TheRepublicOfSarah'':Due to having had sex with both of them in close proximity Corinne has been uncertain for years whether Adam or Danny is her son's father. [[spoiler:It turns out Danny is.]]

* ''Series/TheFive'': It turns out that Jesse was really fathered by Frank, a neighbor whom his mother had an affair with. She suspected he might be the father, but insisted otherwise to Frank.

* The BigBad of [[Manga/JoJosBizarreAdventureVentoAureo Part 5]] of ''Manga/JojosBizarreAdventure'' is an inversion. His mother was [[spoiler:an inmate at an all female prison with all female guards, and she'd already been there for two years when she gave birth. Not only that, but the pregnancy itself was unusually long]]. There are basically no possible paternity candidates at all.

* ''Series/TheRepublicOfSarah'': Due to having had sex with both of them in close proximity Corrine has been uncertain for years whether Adam or Danny is her son's father. [[spoiler:It turns out Adam is.]]

* ''VideoGame/SummertimeSaga'': If MC impregnates either Grace or Odette, they will both keep his identity secret, because he's already dating Grace's little sister Eve. This can become quite comical if he impregnates all three of them within a day or so of each other, meaning Eve will bring her baby home from the hospital in front of a heavily pregnant Grace and Odette, neither of whom has any idea who the "mysterious father" of their children could be right after MC came into their lives.

* ''VideoGame/SummertimeSaga'': If MC impregnates either Grace or Odette, they will both keep his identity secret, because he's already dating Grace's little sister Eve. This can become quite comical if he impregnates all three of them within a day or so of each other, meaning Eve will bring her baby home in front of a heavily pregnant Grace and Odette, neither of whom has any idea who the "mysterious father" of their children could be right after MC came into their lives.

* In ''{{Literature/Twilight}},'' this is a minor, [[AbortedArc unresolved]] subplot with Embry, who turns out to be a [[OurWerewolvesAreDifferent shapeshifter]]. The thing is, that power only passes from father to child, and the only shapeshifters who could have fathered Embry were married to women other than Embry's mother. It's an uncomfortable subject that most of the pack (some of whom, logically, must be Embry's half-siblings) tries to avoid.

* A big part of the plot during season 8 of ''Series/TheXFiles''. Though, being a paranormal show, and with Scully not actually supposed to be able to have children, it was both this and a 'How the heck did this happen?' [[spoiler: It was later revealed that the Smoking Man [[MedicalRapeAndImpregnate had artificially inseminated her with his sperm]].]]

* This pops up with Claudia Black again in season 9 of ''Series/StargateSG1''. Vala, upon accidentally arriving in the Ori galaxy, finds herself pregnant with no explanation and gets married to avoid punishment from the incredibly religious townspeople. Vala and her husband do eventually find out that the child is "the will of the Ori", making Vala's pregnancy a rather dark take on [[YouKeepUsingThatWord immaculate conception]].

* A major plot point in ''WesternAnimation/Archer''' focus on this trope. Sterling's mother, Malory, had slept with a handful of men, so she is unsure who might be the father, and she does everything she can to hide it if she ''does'' know. The most likely candidate was her old flame, KGB head Nikolai Jakov. There was no confirmation, and Barry kills him in Season 3, putting an end to the storyline with no resolution.