What does san mean after a name in japan?

Answer 1

Put in simple terms it means "I respect you"

2.San is used after the persons name as we would

use Mr or Mrs out of respect

but you never call yourself san

because this would be considered rude

and unhumble.

You can call yourself Chan or kun

exp:Mary Chan

Joe kun

Answer 2

Words like -san or -chan are Japanese honorifics, they're used to show respect to the person you are talking to. They can't often be literally translated, their meanings can change depending on who is talking to who. -San however is one that doesn't change much, as it's roughly equivalent to saying 'Mr' or 'Mrs'.