Why You Never Learned Penny's Last Name On The Big Bang Theory | Why You Never Learned Penny's Last Name On The Big Bang Theory | By Looper | If you're a
![Big Bang Theory - Penny's real surname revealed as fans spot major clue? | TV & Radio | Showbiz & TV | Express.co.uk Big Bang Theory - Penny's real surname revealed as fans spot major clue? | TV & Radio | Showbiz & TV | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/20/590x/1214038_1.jpg)
Big Bang Theory - Penny's real surname revealed as fans spot major clue? | TV & Radio | Showbiz & TV | Express.co.uk
![Penny's 'Big Bang Theory' Secret: You'll Never Know Her Last Name, Steve Molaro Says | HuffPost Entertainment Penny's 'Big Bang Theory' Secret: You'll Never Know Her Last Name, Steve Molaro Says | HuffPost Entertainment](https://img.huffingtonpost.com/asset/5bb5735d3c000018010ce927.jpeg?ops=scalefit_720_noupscale&format=webp)
Penny's 'Big Bang Theory' Secret: You'll Never Know Her Last Name, Steve Molaro Says | HuffPost Entertainment
![Penny was never given a maiden name by the writers. Until she took Leonard's last name she was only referred to as 'Penny'. : r/bigbangtheory Penny was never given a maiden name by the writers. Until she took Leonard's last name she was only referred to as 'Penny'. : r/bigbangtheory](https://i.redd.it/izy1v0vw08791.jpg)