Big Bang Theory Crossovers
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Harry Potter and The Big Bang Connection by AnnaleaseTurner reviews
Something is stranger than usual with Sheldon, what could this be? Find out the connection with Harry Potter as you read.
Crossover - Harry Potter & Big Bang Theory - Rated: T - English - Chapters: 1 - Words: 474 - Reviews: 5 - Favs: 20 - Follows: 34 - Published: 11/8/2019
Your Presence Honours Us by sjmax reviews
Before Amy. Before Santana. An unlikely friendship is about to develop. Will it turn to romance?
Crossover - Big Bang Theory & Glee - Rated: K - English - Humor/Romance - Chapters: 1 - Words: 943 - Reviews: 2 - Favs: 2 - Follows: 2 - Published: 11/3/2019 - Sheldon C., Penny, Brittany P.
The Graphic Disagreement by Fophelia1331 reviews
When Frisk, Sans, Leonard, and Penny walk in on Undyne, Alphys, Howard, and Sheldon arguing over comics and manga, well things get weird, that's true.
Crossover - Big Bang Theory & Undertale - Rated: T - English - Humor - Chapters: 1 - Words: 341 - Reviews: 3 - Favs: 3 - Follows: 1 - Published: 9/13/2019 - Sheldon C., Howard W., Undyne, Alphys - Complete
The Gull Cottage Hypothesis by Juleeroze reviews
Carolyn Muir and Daniel Gregg have passed on but still remain interested in the happenings of mortals. Their children are not only grown, but middle aged and although they own Gull Cottage jointly, Candy and Jonathan rent it out in the summer. What happens when Sheldon Cooper and Amy Farrah Fowler rent it for the summer after winning the Nobel Prize in Physics? A lot!
Crossover - Ghost and Mrs. Muir & Big Bang Theory - Rated: K - English - Humor/Romance - Chapters: 9 - Words: 21,457 - Reviews: 1 - Published: 7/26/2019
Back in Time by Sbi
It's a mix between two of my favorite Shows. Sience meets Magic. I changed the names of the Halliwell childern and their last Name is different.
Crossover - Charmed & Big Bang Theory - Rated: T - English - Chapters: 9 - Words: 19,896 - Favs: 1 - Follows: 1 - Updated: 6/11/2019 - Published: 11/27/2018 - Chris H., Sheldon C., Amy Farrah Fowler - Complete
The Timbre Reconfiguration by Smeg699 reviews
Instead of traveling to Barden for her college education, Beca instead gets four years in LA to make her dreams happen. How will our little DJ fare with a pair of hot blonds and five crazy scientists?
Crossover - Big Bang Theory & Pitch Perfect - Rated: K+ - English - Humor - Chapters: 7 - Words: 53,542 - Reviews: 26 - Favs: 52 - Follows: 89 - Updated: 5/16/2019 - Published: 5/27/2014 - Penny, Aubrey P., Beca M., Chloe B.
Theory of The Big Bang by ArtAddictedArchitect reviews
A Bisexual, PartiallyAscended! Self Insert Howard Wolowitz crossover with Stargate. What do you do when you're a SI! trapped in a crossover universe? Goa'uld, Shadowy government organizations, the Lucian Alliance out to destroy the Earth with Howard and the gang trapped on the starship Destiny. The Destiny Of All Things is hidden in the Cosmic Microwave background.
Crossover - Big Bang Theory & Stargate: Universe - Rated: M - English - Adventure/Sci-Fi - Chapters: 18 - Words: 39,583 - Reviews: 138 - Favs: 137 - Follows: 153 - Updated: 5/2/2019 - Published: 3/7/2019 - [Howard W., Leslie W., Amy Farrah Fowler, Rajesh K.]
Penny vs The Brain Deterioration by marcelb reviews
Carmichael Industries is called upon by General Beckman for, what is presented as, a relatively simple search-and-retrieve mission. But nothing is ever easy for Team Bartowski, not when the mission involves the Intersect, unexpected allies and a race against time to save a team member.
Crossover - Chuck & Big Bang Theory - Rated: T - English - Chapters: 5 - Words: 17,817 - Reviews: 14 - Favs: 5 - Follows: 9 - Updated: 4/30/2019 - Published: 12/26/2016 - Complete
The Avalon Project by Kraewen reviews
10 years after the war the curse of Halloween strikes again and Ava feels that she needs a new beginning away from the constant reminders of what happened to her. She moves to Pasadena, California where she begins a new chapter of her life. And a new project. Fem!Harry
Crossover - Harry Potter & Big Bang Theory - Rated: M - English - Hurt/Comfort/Friendship - Chapters: 3 - Words: 25,687 - Reviews: 48 - Favs: 347 - Follows: 553 - Updated: 4/12/2019 - Published: 3/15/2018 - Harry P., Penny
The Sheldon Cooper Tutoring Math Experience by Bam27 reviews
Jake is having a hard time in his math class so Alan looks for a math tutor. Alan also ends up on a date with a woman he met online.
Crossover - Big Bang Theory & Two and a Half Men - Rated: T - English - Humor/Romance - Chapters: 2 - Words: 5,719 - Reviews: 1 - Favs: 3 - Published: 3/17/2019 - Complete
Another puzzle by elgatonintendero reviews
It's a crossover between TBBT and Dr. House. It's sets 15 years in the future. When Sheldon gets sick, Amy and their children ask to a famous diagnosticator to treat him.
Crossover - House, M.D. & Big Bang Theory - Rated: K+ - English - Angst/Drama - Chapters: 3 - Words: 2,158 - Reviews: 2 - Favs: 5 - Follows: 4 - Updated: 3/4/2019 - Published: 7/15/2018 - G. House, Sheldon C., Amy Farrah Fowler
The Professor Proton Resonance by penna.nomen reviews
Sheldon and Rodney bond over Professor Proton
Crossover - Stargate: Atlantis & Big Bang Theory - Rated: K+ - English - Humor - Chapters: 1 - Words: 628 - Reviews: 2 - Favs: 6 - Follows: 2 - Published: 2/21/2019 - Rodney M., John S., Radek Z., Sheldon C. - Complete
The Supercomputer Optimization by MysteriousWriter1127 reviews
Sheldon has hit a dead end and was going to give up, but was told about a computer pill otherwise known as a SQUIP and takes it having it develop inside his head and tells him what to do so he can win the Nobel Prize.
Crossover - Big Bang Theory & Be More Chill - Rated: T - English - Drama/Sci-Fi - Chapters: 4 - Words: 2,713 - Reviews: 1 - Favs: 1 - Follows: 1 - Updated: 12/29/2018 - Published: 8/21/2018 - Leonard H., Sheldon C., Penny
The Star Trek Original Series Uchronia by Eliza Donelittle reviews
Leonard & the Big Bang Theory gang go to a fancy dress party and end up switching places with the crew of the Starship Enterprise (original series). They have to deal with the voyage of the Starship Enterprise while trying to figure out how to get home. Meanwhile Captain Kirk & crew have the same problem in The Big Bang Theory universe.
Crossover - StarTrek: The Original Series & Big Bang Theory - Rated: T - English - Humor/Sci-Fi - Chapters: 10 - Words: 18,375 - Reviews: 31 - Favs: 21 - Follows: 34 - Updated: 12/3/2018 - Published: 10/20/2012 - J. Kirk, Spock, Leonard H., Sheldon C.
The Elementary Theory by Delgardo reviews
I'm sure this has been done before but i felt like trying. Rolling a "Sherlock" and "Elementary" style take on a modern Holmes into The Big Bang Theory. Take a step back and look then the themes fit. * Two improbable room mates going on adventures. It even starts with them moving in. * An insufferable genius with an improbable name that starts with an S
Crossover - Big Bang Theory & Elementary - Rated: M - English - Mystery/Adventure - Chapters: 10 - Words: 12,135 - Reviews: 7 - Favs: 9 - Follows: 17 - Updated: 11/28/2018 - Published: 4/29/2018
Crosslander by MCEProd22 reviews
On a Vacation with her parents, Sarada Uchia walks into a stone circle and wakes up far from her home. Flung across time and Reality and taken in as an assistant to a recently single physicist. Sarada struggles with the life she knew and the one she now calls home. While the great heroes from before reunite to bring back their next generation. (Cossover with Outlander Elements)
Crossover - Naruto & Big Bang Theory - Rated: T - English - Adventure/Fantasy - Chapters: 11 - Words: 10,744 - Reviews: 3 - Favs: 6 - Follows: 11 - Updated: 10/17/2018 - Published: 9/20/2015
The Many Worlds Interpretation by A.A. Pessimal reviews
The wizards of Unseen University created a pocket universe. They learnt how to interact with it and to visit one particular planet. Where there is the USA. California. Pasadena. Caltech. Where other academically and scientifically minded people - with personalities as quirky as those of UU's wizards - strive to solve the mystery of the Big Bang. And then they met.
Crossover - Discworld & Big Bang Theory - Rated: T - English - Humor/Sci-Fi - Chapters: 42 - Words: 255,300 - Reviews: 115 - Favs: 77 - Follows: 82 - Updated: 8/12/2018 - Published: 11/1/2013 - Hex, Ponder Stibbons, Leonard H., Sheldon C.
The Apartment Below by fandom.fantasy reviews
Sheldon and Leonard think everything is normal when all of a sudden, seven 18 year olds are moving into the apartment below. Little did they know who the seven were? After HoO Before Amy and Bernadette
Crossover - Percy Jackson and the Olympians & Big Bang Theory - Rated: K+ - English - Humor/Adventure - Chapters: 7 - Words: 3,699 - Reviews: 12 - Favs: 21 - Follows: 26 - Updated: 8/3/2018 - Published: 7/27/2015
The Magic and Attraction Correlation by ANGSWIN reviews
After a "Harry Potter" movie marathon, Sheldon has a dream that he and the gang are all students at Hogwarts. Could his real life ever be that magical?
Crossover - Harry Potter & Big Bang Theory - Rated: T - English - Romance/Friendship - Chapters: 1 - Words: 5,747 - Reviews: 5 - Favs: 33 - Follows: 10 - Published: 7/24/2018 - [Penny, Sheldon C.] Leonard H., Amy Farrah Fowler - Complete
Mr Monk Makes Progress by SuperBear
Mr. Monk is getting married! And Sheldon Cooper and his friends are part of the festivities. But when an old Monk nemesis threatens to crash the wedding, can the whole group stop him?
Crossover - Monk & Big Bang Theory - Rated: T - English - Chapters: 1 - Words: 4,662 - Favs: 1 - Published: 6/21/2018
Crossing Death by Isis78-13 reviews
Follow Harry and Hermione on this three way crossover adventure in which the dead rise and new friends are made. Looking for a Beta!
Crossover - Harry Potter & Big Bang Theory - Rated: M - English - Romance/Fantasy - Chapters: 6 - Words: 12,330 - Reviews: 3 - Favs: 27 - Follows: 33 - Updated: 5/20/2018 - Published: 3/1/2018 - Harry P., Hermione G.
Sheldon Cooper works with Lisa Loud by burtonfan422 reviews
Cal Tech has assigned Sheldon to do some research with a scientist from Royal Woods, Michigan on the belief that the two of them would get along and work well together. But when Sheldon does meet the mysterious scientist, she's not quite what she expected.
Crossover - Big Bang Theory & Loud House - Rated: K+ - English - Humor/Friendship - Chapters: 6 - Words: 4,521 - Reviews: 6 - Favs: 15 - Follows: 11 - Updated: 5/14/2018 - Published: 3/10/2018 - Sheldon C., Penny, Leni L., Lisa L. - Complete
The Dark Mayhem Theory by Dts17 reviews
While on vacation in Hiddenville, Julia Cooper comes face to face with Phoebe Thunderman and some crazy adventures happen when Dark Mayhem threatens to return for revenge. What will happen when America's favorite geeks clash with a family of superheroes? Find out. I don't own TBBT or The Thundermans but I do own Julia Cooper.
Crossover - Big Bang Theory & Thundermans - Rated: T - English - Friendship/Adventure - Chapters: 1 - Words: 3,112 - Reviews: 1 - Follows: 1 - Published: 2/21/2018 - Complete
Big Bang Theory meets ICarly by Dts17 reviews
What happens when America's favorite geeks meet the webshow famous ICarly? Crazy things happen, of course! Lol! I don't own Big Bang Theory or ICarly but I do own Matteron and Nova who are my original characters from The Descendants of Sheldon and Leonard.
Crossover - iCarly & Big Bang Theory - Rated: T - English - Friendship/Crime - Chapters: 2 - Words: 7,955 - Reviews: 1 - Updated: 2/18/2018 - Published: 1/28/2018 - Complete
How we met your father, Sheldon by Seablue eyes 9311 reviews
One day a young man stands outside the apartment door, Leonard would not know what kind of changes he would bring with him. But the man was Sheldon s father, some changes was guarantied to happen. Some Out of character!Sheldon, implied master of death!Harry, magic revealed, one shot, Rated T for safty!
Crossover - Harry Potter & Big Bang Theory - Rated: T - English - Family/Friendship - Chapters: 1 - Words: 4,240 - Reviews: 9 - Favs: 185 - Follows: 88 - Published: 2/4/2018 - Harry P., Sheldon C. - Complete
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