The Big Bang Theory

Priya Koothrappali

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Priya Koothrappali
Corporate Lawyer
Series Information
First episode
No. episodes
Portrayed by

Priya Koothrappali is Raj's younger sister. She first appeared in "The Irish Pub Formulation" and serves as the unintentional main antagonist of season 4 in that Penny regards Priya as Leonard's most viable alternative girlfriend.

Series overviewEdit


While Bernadette did not have any personal dislike towards Priya, she knew how Penny felt about Leonard dating her. In "The Wildebeest Implementation," Bernadette spies on Priya and Leonard for Amy, though she has difficulty keeping up any lies she gives. Priya also called her "interesting," and would frequently invite her and Howard to double-dates.


Amy was the first to guess Penny was unhappy about Leonard and Priya (before Penny even did herself), later consoling Penny when the latter started crying. While she frequently insults Priya; however, she admitted Priya had a lot of good qualities that Leonard was attracted to, such as her intelligence and beauty.


  • Priya graduated with a degree in law from Cambridge University in the United Kingdom.
  • She can practice law in three different countries: most likely the UK (where she studied), India (her birth country), and the USA (where she worked at the time).
  • At Cambridge University, her Texan flat-mate taught her how to make chili.
  • Priya is Leonard's second girlfriend who moved in with him. The first was Stephanie Barnett.
  • Priya is the only girlfriend Leonard had who Raj can talk to or around without being drunk, obviously for family reasons. He talked to Penny in the Season 6 finale (without being under the influence), but this fact doesn't mean he will be able to constantly talk to her in Season 7.
  • Her ex-boyfriend is named Sanjay, as is one of her cousins. Sanjay is also a name adopted by Howard in "The Hofstadter Isotope".
  • Priya can be considered the antagonist of Season 4 due to her relationship with Leonard creating a rivalry with Penny. Also, certain aspects of her personality were arguably antagonistic.
  • Out of all of Penny's rivals, Priya was the biggest threat, serving as Leonard's girlfriend the longest, only second to Penny.
  • In "The Skank Reflex Analysis", Leonard mentioned he and Priya had been dating for eight months prior to her returning to India. Interestingly, this time frame is how long he and Penny originally dated before they broke up.
  • Throughout Priya's appearances it can be seen that Penny may be jealous of Priya, even agreeing to spy on her with Amy and Bernedette.


  • Priya and Leonard.
  • Don't floss too close.
  • Her parents and brother.
  • Sheldon caught them in the shower.
  • Priya.
  • First kiss after five years.
  • Bernie asking pointed questions.
  • I might be offered a job in LA.
  • Sheldon betters here over the roommate agreement.
  • Analyzing the roommate agreement.
  • Sheldon catches them in the shower.
  • Priya caught by Sheldon.
  • Where is this going, Leonard?
  • Getting back before Raj finds out.
  • Priya and Leonard.
  • Priya and Raj.
  • Priya and Raj.
  • Priya bonding with Penny.
  • Priya bonding with Penny.
  • Priya that she messed up too; sleeping with her ex-boyfriend.
v · e · d
Characters, Cast & Crew
Characters Main Leonard Hofstadter  ‧  Sheldon Cooper  ‧  Penny  ‧  Howard Wolowitz  ‧  Rajesh Koothrappali  ‧  Amy Farrah Fowler  ‧  Bernadette Rostenkowski-Wolowitz    Stuart Bloom  ‧  Leslie Winkle    The Social Group
Recurring Mrs. Wolowitz  ‧  Barry Kripke  ‧  Priya Koothrappali  ‧  Dr. V. M. Koothrappali  ‧  Mrs. Koothrappali  ‧  Lucy  ‧  Mrs. Mary Cooper  ‧  Zack Johnson  ‧  Dr. Beverly Hofstadter  ‧  Mike Rostenkowski  ‧  Emily Sweeney  ‧  Alex Jensen  ‧  Professor Proton  ‧  Althea  ‧  Cinnamon
Cast Regulars Johnny Galecki  ‧  Jim Parsons  ‧  Kaley Cuoco-Sweeting  ‧  Simon Helberg  ‧  Kunal Nayyar  ‧  Mayim Bialik  ‧  Melissa Rauch  ‧  Kevin Sussman  ‧  Sara Gilbert  ‧  Carol Ann Susi  ‧  John Ross Bowie
As Selves Wil Wheaton  ‧  Mike Massimino  ‧  Stephen Hawking  ‧  Katee Sackhoff  ‧ Steve Wozniak  ‧ Buzz Aldrin  ‧ Summer Glau  ‧ James Earl Jones  ‧ Carrie Fisher  ‧ Brent Spiner  ‧ Bill Nye  ‧ George Smoot  ‧ George Takei  ‧ LeVar Burton  ‧ Neil deGrasse Tyson  ‧ Brian Greene
Crew Writers Chuck Lorre * (Creator)  ‧  Bill Prady * (Creator)  ‧  Steven Molaro *  ‧  Steve Holland *  ‧  Maria Ferrari *  ‧  Jim Reynolds *  ‧  Eric Kaplan *  ‧  Anthony Del Broccolo  ‧  Lee Aronsohn *  ‧  Dave Goetsch *  ‧  Tara Hernandez  ‧  Richard Rosenstock *
Directors Mark Cendrowski  ‧  Peter Chakos * (mainly as Editor)  ‧  Anthony Rich  ‧  James Burrows
Science consultant : David Saltzberg Director of photography : Steven V. Silver
Costume designer : Mary T. Quigley * Unit production manager : Kelly-Anne Lee *
Theme composer / performer : Barenaked Ladies Chuck Lorre Productions
also as Producer The Big Bang Theory : Full cast & crew on IMDb

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