<P> In `` The Maternal Capacitance '' , Penny reveals that her father Wyatt ( Keith Carradine ) tried to raise her like a boy , which is a source of pain for her , leading her to have father issues . When she and Leonard begin dating , Wyatt comes to appreciate that she is dating an accomplished academic , rather than an uneducated hick , so much so that when he visits Penny in the fourth - season episode `` The Boyfriend Complexity '' following her and Leonard 's breakup , it is revealed that she has not revealed the breakup to her father . When she later informs Wyatt of the breakup , Wyatt secretly encourages Leonard to not give up on her . In contrast to all other characters , Penny and her father 's last name 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 last name will remain a secret . </P>
<P> In `` The Maternal Capacitance '' , Penny reveals that her father Wyatt ( Keith Carradine ) tried to raise her like a boy , which is a source of pain for her , leading her to have father issues . When she and Leonard begin dating , Wyatt comes to appreciate that she is dating an accomplished academic , rather than an uneducated hick , so much so that when he visits Penny in the fourth - season episode `` The Boyfriend Complexity '' following her and Leonard 's breakup , it is revealed that she has not revealed the breakup to her father . When she later informs Wyatt of the breakup , Wyatt secretly encourages Leonard to not give up on her . In contrast to all other characters , Penny and her father 's last name 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 last name will remain a secret . </P>
what is penny 's dad 's name on the big bang theory
what is penny 's dad 's name on the big bang theory
Wyatt
Wyatt