The Big Bang Theory Quiz
Try out this The Big Bang Theory quiz to test your knowledge. The Big Bang Theory trivia explores the hit American sitcom created by Chuck Lorre and Bill Prady, which aired on CBS from 2007 to 2019.

15 questions
~3 min to finish
Mostly hard difficulty
500 pts max score
Question 1 · Medium · 20 pts
What world-famous physicist guest-starred as himself on the show?
Question 2 · Medium · 20 pts
Which moonwalking astronaut made a guest appearance as himself?
Question 3 · Medium · 20 pts
Which Star Wars legend guest-starred as herself?
Question 4 · Medium · 20 pts
Which actor from Star Wars appeared as himself in the series?
Question 5 · Medium · 20 pts
Who brought extra gravitas by guest-starring as himself?
Question 6 · Hard · 40 pts
Before Penny existed in the aired version, which character filled that role in the original unaired pilot?
Question 7 · Hard · 40 pts
Who played Katie in the original unaired pilot?
Question 8 · Hard · 40 pts
Which actress appeared in the original unaired pilot as Gilda?
Question 9 · Hard · 40 pts
Sheldon and Amy ultimately win which major scientific honor?
Question 10 · Hard · 40 pts
Their Nobel-winning work is said to concern what concept?
Question 11 · Hard · 40 pts
The season 8 premiere finally reveals Penny's surname as what?
Question 12 · Hard · 40 pts
Which actor plays Stuart Bloom?
Question 13 · Hard · 40 pts
Leslie Winkle is portrayed by whom?
Question 14 · Hard · 40 pts
Which acclaimed actress plays Beverly Hofstadter?
Question 15 · Hard · 40 pts
Who portrays Mary Cooper on The Big Bang Theory?