The oldest known photograph to have a person (human) in the shot was clicked in Paris in 1838. The man was actually getting his shoe polished!
The photo was taken by Louis Jacques-Mande Daguerre in 1838. This is a photo of the Boulevard du Temple in Paris. It is a busy street and there was tons of traffic, but since the exposure was so long, about 15-20 minutes, none of the moving figures can be seen. The only people visible are a guy getting his boots polished and the bootblack. Who was this nameless gentleman or the bootblack? No one knows.