Rob was linked to the ABC competition this week, while sister Kim was the third celebrity eliminated on the seventh season.
Speaking about the rumours that he is wanted for the new season of Dancing on Lopez Tonight, Rob said: "I saw something today on my Twitter which said that me and some other people were maybe going to do it but I can't dance at all.
"I go to the club and I can't dance. I know my place and I know I don't dance, but I'm very competitive and everything like that. I'm very quiet, laid back, don't like to say much or dance much, but it would be interesting... "
Rob went on to joke: "My sister lasted like a week. I was like, 'I'll catch you on the next one' because I was out of town but then she was gone! I would have to do better than her!"
Kim had been partnered with Mark Ballas on the dance competition, and it was recently reported that he has given her and fiancé Kris Humphries private dance lessons in preparation for their upcoming wedding.
Humphries popped the question to Kim in May after spelling out 'will you marry me?' in rose petals on her bedroom floor. The couple will tie the knot this summer.
Keeping Up With The Kardashians airs Sundays at 10pm on E!
> Rihanna, Rob Kardashian flirt on Twitter
Watch Kim Kardashian and Mark Ballas on Dancing with the Stars below: