Like Ed Sheeran and Rupert Grint, this is one of the best known and commonly made celebrity mix-ups in the world today. There are even websites devoted to the conspiracy theory that Chris Rock and Kevin Hart are actually the same person. They look like they were separated at birth, and with both of them being comedy actors, it's very easy to see how people could come to that conclusion. It's only because we've seen photos of them together, like this one, that we can say for sure that they're definitely two distinct individuals.
We think that Rock just about has a bigger media profile than Hart, although there's not a lot in it; especially when the Kevin Hart meme is used so often on social media. Hart takes it all in his stride though; when people mistake him for Rock, he says it 'keeps him humble', and the pair seem to get on fine in real life.