There are several homophones in Japanese that are pronounced san, some of which appear in English:
A title akin to Mr. and Ms., which came from the politer sama. For example, Tanaka-san means Mr. or Ms. Tanaka. It is not gender-specific and can follow a surname, a given name, a full name, or even a company's name.
A suffix meaning a mountain as in Fuji-san, which came from Chinese.