- Nayyar once belonged to a two-person band called the Prince and the Pauper; he was the Prince.
- He competed in badminton at club level and has identified it as his favorite sport.
- His naturally curly hair was routinely straightened for his role on The Big Bang Theory.
- He has jokingly used the DJ name “DJ Million-Nayyar.”
- He once sank a roughly 20-foot putt in front of Tiger Woods.
- He has said that loneliness while studying business in the United States helped lead him into theater because acting created opportunities to interact with people.
- He narrated and co-produced the cricket documentary Beyond All Boundaries; after initially being approached only as its voice, he became more involved and helped promote its Kickstarter campaign.