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The following is a list of characters from the American situation comedy Young Sheldon created and executive produced by Chuck Lorre and Bill Prady, which premiered on CBS on September 25, 2017. It concerns Sheldon Cooper as a little boy and living in Texas with his family.

Main characters[]

Character Portrayed by Seasons
1 2 3 4 5
Sheldon Cooper Iain Armitage Main
Jim Parsons Main[note 1]
Mary Cooper Zoe Perry Main
George Cooper Sr. Lance Barber Main
George "Georgie" Cooper Jr. Montana Jordan Main
Melissa "Missy" Cooper Raegan Revord Main
Constance "Connie" Tucker ("Meemaw") Annie Potts Main[note 2]
Pastor Jeff Matt Hobby Recurring Main
Billy Sparks Wyatt McClure Recurring Main
  • Sheldon Cooper (Iain Armitage): A child prodigy with a "once-in-a-generation mind capable of advanced mathematics and science". While well-versed in all types of math and science, he is shown to prefer theoretical physics, stating that he decided to pursue the field around the same time as the show began. While academically gifted, Sheldon lacks a full understanding of social cues and behaviors, in addition to having a sense of superiority over everyone around him due to his intelligence. Sheldon is prone to traveling his own path even if he gets into trouble along the way. Nevertheless, Sheldon has proven to love his family and almost always has his heart in the right place. He is age 9 in the first season and age 10 in the second and third. In season 4 he will be 11 and start college. The voice of Adult Sheldon narrating the series and who provides the perspective of an adult looking back at his childhood.
  • Mary Cooper (Zoe Perry): Sheldon's mother. She is very protective and patient with Sheldon but also struggles to understand him at times. She is a devout Christian and so has friction with Sheldon's atheism and derision of Christianity. Nevertheless, she deeply loves her son and wants to protect him for as long as she can.
  • George Cooper Sr. (Lance Barber): Sheldon's father and the head football coach at Medford High. George does not share Sheldon's intellect, sometimes leading others, especially Meemaw, to doubt his genetic relationship to Sheldon. However, he is often the voice of reason for Sheldon. Though he may struggle with understanding his intellectually gifted son, he is a loving father and has defended Sheldon on multiple occasions, earning Sheldon's love and appreciation. He will pass away when Sheldon is 14 before he heads to Caltech.
  • George Cooper Jr. (Montana Jordan): Sheldon's older brother. Georgie detests Sheldon and never hesitates to bully him. He is not very intelligent and so is mocked and teased by the rest of the family, particularly Sheldon and Meemaw. While he is outwardly confident in himself, Georgie hides deep insecurities over feeling inferior to his genius brother and thus copes by trying to belittle Sheldon's intelligence in any way he can. He attends Medford High with Sheldon and plays on the school's football team. The character of George, Jr. is also given some appealing features. For instance, he is very successful in sales and becomes wealthy from it. He also gradually learns how to be nice to his girlfriends.
  • Missy Cooper (Raegan Revord): Sheldon's fraternal twin sister. She teases Sheldon along with Georgie but not as much. She does not share Sheldon's intelligence but is very perceptive. She does not always get along with Sheldon, but she finds in her twin brother a solid confidant and has admitted to not feeling as whole without him. In episode 21 of season one, she asks her father to call her Melissa, implying that Missy is a nickname.
  • Connie Tucker/Meemaw (Annie Potts): Sheldon, Missy, and Georgie's maternal grandmother, whom they refer to as "Meemaw". She is a very sarcastic character who often mocks those around her. Meemaw is very close with Mary and her grandchildren but does not think highly of George and often jokes about him. She is the most patient and understanding of Sheldon's quirks and advises Mary to trust that Sheldon will find his way.
  • Jeff Difford (Matt Hobby): The upbeat pastor of the Cooper family's local church. Like Mary, he has friction with Sheldon's atheism, but he often challenges Sheldon to explore their line of thought through logic exercises. He was formerly married to a Hispanic woman named Selena but they had a bad marriage and she leaves him and after the divorce, he has met and married a police officer named Robin. They reveal that they are going to be parents.
  • Billy Sparks (Wyatt McClure): A neighborhood boy to the Cooper family.
  1. Voice only.
  2. Annie Potts is not credited and doesn't appear until Poker, Faith, and Eggs.

Recurring and Minor characters[]

These characters appear in two episodes or more than two episodes.

Introduced in Season 1[]

  • Victoria McElroy (Valerie Maheffey): The English teacher and also Sheldon's homeroom teacher at Medford High School
  • Tom Petersen (Rex Linn): The principal at Medford High School
  • Evelyn Ingram (Danielle Pinnock): The math teacher at Medford High School.
  • Hubert Givens (Brian Stepanek): The science teacher at Medford High School
  • Ms. Fenley (Melissa Tang): The music teacher at a Medford High School.
  • Wayne Wilkins (Doc Farrow): The P.E. teacher and assistant football coach at Medford High School.
  • Sheryl Hutchins (Sarah Baker): The librarian at Medford High School and the only one at the school staff who gets along with Sheldon.
  • Tam Nguyen (Ryan Phuong): A Vietnamese boy who is Sheldon's only friend.
  • Herschel Sparks (Billy Gardell): Billy's father who owns a garage.
  • Trang Nguyen (VyVy Nguyen): Tam's mother who, along with her husband, owns a convenience store called Medford Mart
  • Peg (Nancy Linehan Charles): Pastor Jeff's chain-smoking secretary
  • Gene Lundy (Jason Alexander): The drama teacher at Medford High School and also a realtor
  • Brenda Sparks (Melissa Peterman): Billy's mother and Mary's nemesis who works at the bowling alley frequented by Meemaw.
  • John Sturgis (Wallace Shawn): A physics professor at East Texas Tech, the university Sheldon is auditing coursework for, and also dated Meemaw.

Introduced in Season 2[]

  • Paige Swanson (McKenna Grace): A child prodigy who enters Dr. Sturgis's class and is smarter than Sheldon. Later on, she sports a bad girl look and doesn't wanna be smart anymore after her parents' divorce.
  • Barry Swanson (Josh Cooke): Paige's father
  • Linda Swanson (Andrea Anders): Paige's mother
  • Veronica Duncan (Isabel May): A troubled teen who becomes a Born-again Christian. She is the object of Georgie's affection. She first appears as Georgie's Halloween date in "Seven Deadly Sins and a Small Carl Sagan". She converts to Christianity after seeing the "lust" room in Mr. Lundy's haunted house and loses interest in Georgie, who continues trying to win her over.
  • Grant Linkletter (Ed Begley Jr.): A colleague of Dr. Sturgis who is romantically interested in Meemaw but she continually rebuffs him.
  • Robin Difford (Mary Grill): Pastor Jeff's second wife and a police officer who he meets when she pulls him over for crossing a red light but doesn't give him a ticket due to her being in love with him. They begin dating and later get married. In “A House for Sale and Serious Woman Stuff”, they reveal that they're going to have a baby.
  • Amy Farrah Fowler (Lily Sanfelippo (child)/Mayim Bialik (adult; voice)): Sheldon's future wife

Introduced in Season 3[]

  • Dale Ballard (Craig T. Nelson): A sports store owner and part-time baseball coach who lets Missy join the baseball team, hires Georgie as a salesman at his shop and dates Meemaw after her breakup with Dr. Sturgis.
  • Jana (Ava Allan): Georgie's girlfriend.
  • June (Reba McEntire): Dale's ex-wife who strikes up a friendship with Meemaw.

Introduced in Season 4[]

One-episode appearance[]

These characters appear in only one episode or one episode for now until they make more appearances.

Season 1[]

  • Le Nguyen (Paul Yen):Tam's father who, along with his wife, owns a convenience store called Medford Mart
  • Selena (Zuleyka Silver): Pastor Jeff's Hispanic ex-wife who doesn't speak a word of English, is a terrible wife, a gold digger and abusive. In the penultimate episode of Season 2, she leaves him, considering him to be a loser.
  • Libby (Anjelika Washington):
  • Bobbi Sparks (Ella and Mia Allan): Billy's sister who has a reputation for tormenting Sheldon.
  • Bucky (Unknown dog): The Sparks family dog

Season 2[]

  • Erica Swanson (Ella Anderson): Paige's sister who bonds with Georgie and Missy as they share common experience of being the siblings of a child prodigy
  • Kim-Ly and Mai Nguyen (Angelina Nguyen and Cheyenne Nguyen): Tam's sister who appeared in “A Financial Secret and Fish Sauce” where they laugh at Sheldon's stupidity of eating with chopsticks.
  • Ricky (Mauricio Lara): A boy who Sheldon befriends at the hospital.
  • James Gilford (Barry Corbin): A retired war veteran and a member of the church congregation. After all he went through in the war, he prefers the quiet life. He dies in the end.
  • Clint (Tim Griffin): The abusive boyfriend of Veronica's mother and a drunk
  • Leonard Hofstadter (Isaac Harger): Sheldon and Georgie's future friend.
  • Beverly Hofstadter (Christine Baranski; voice): Leonard Hofstadter's mother whose voice tells Leonard that he should be in bed when he's awake listening to the Nobel Prize ceremony awards. Beverly would also become a very close friend of Sheldon and also is his female equivalent. Beverly would also become a nemesis of Mary.
  • Penny Hofstadter (Quinn Aune): Sheldon's future friend.
  • Rajesh Koothrappali (Rishabh Prabhat): Sheldon's future friend.
  • Howard Wolowitz (Ethan Reed Stern): Sheldon's future friend.
  • Debbie Wolowitz (Pamela Adlon; voice): Howard Wolowitz's mother who yells at him to turn off the “farkakta” game and go to sleep.
  • Bernadette Rostenkowski-Wolowitz (Aj Cogeshall): Sheldon's future friend.

Season 3[]

Season 4[]

  • Gretchen (Sonya Eddy): Worker at the drug store who sells George several drugs when Missy goes into her first period.
  • Mr. Boggs (Rick Peters): Jana's father

Season 5[]

  • Pastor Rob (Dan Byrd): A youth pastor of a church Sheldon and Missy attend every Sunday.
  • Professor Boucher (Lance Reddick): A former army engineer and a current engineer in East Texas Tech.