The characters of Big Bang Theory are:

  • Sheldon Lee Cooper
  • Leonard Leakey Hofstadter
  • Howard Joel Wolowitz
  • Rajesh Ramayan Koothrappali
  • Bernadette Maryanne Rostenkowski-Wolowitz
  • Amy Farrah Fowler


Penny!? That's it? No last name, or even a middle name?

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    Her last name may soon become Hofstadter. – pacoverflow Oct 24 '14 at 6:50
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    @pacoverflow Since smart is the new sexy, it may soon became Cooper ^_^ – Soner Gönül Oct 24 '14 at 14:24
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    @Soner Why not Kripke then - he's smarter than Cooper. :) – pacoverflow Oct 24 '14 at 17:00
  • @SandySands: wait for it .... dary! Maybe you confused it with HIMYM, which has now finished the last season. – user15422 Oct 24 '14 at 18:52
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    @user15422 now I'll never know what @\SandySands said... :-( – Michael Oct 25 '14 at 1:48

From Penny's Wikipedia entry:

In contrast to all other characters, Penny and her father's surname have not been revealed. Co-creator Bill Prady stated that Penny's last name will be revealed eventually. Executive producer Steve Molaro, however, has since stated her surname will remain a secret.


Now that Penny and Leonard are married, her last name is Hofstadter. Leonard got down on one knee in episode 2 of this season (9) and asked her, "Penny Hofstadter, will you stay married to me?" to which she said yes. Typically such formal proposals include middle names (and a maiden name in some cases) but since she doesn't have any, it was short and simple.

  • 2
    Spoilers! Ahhhh! :/ – RedCaio May 15 '16 at 5:30
  • I'm quite surprised how you people imply that marriage automatically implies that her name has changed. Is it somehow required for the bride to change her name in the US? :/ – Sawarnik Jan 30 '18 at 17:23
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    I didn't assume anything. The lines of the script had him calling her that. – Kate Gregory Jan 30 '18 at 18:04

After some research, this is what I found to be the latest update regarding Penny's last name (before she married Leonard) or her maiden name:

Writer Steve Molaro said: ‘[Eventually] we got nervous and superstitious about giving her one.’

He added: ‘It will always be [her married name] Hofstadter.’

The same information is present over various other websites as well.

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