A humorist is a writer or speaker who tells stories about funny situations or experiences. Mark Twain was a famous American humorist.
Being a humorist has a little in common with being a comedian, but they're not exactly the same. A humorist is a serious writer (or speaker) who uses humor to make a point or help readers see what's funny about specific situations or life in general. Comedians, on the other hand, are performers who tell jokes that are meant to make you burst out laughing immediately.