The richest man in the world is a mexican of lebanese background.

From Wikipedia:
His father, Julián Slim Haddad Aglamaz, a Lebanese Christian from Jezzine, moved as a teenager to Mexico City in 1902. Julián established a dry goods store called La Estrella del Oriente (Star of the Orient) in 1911 and bought some prime real estate in the city center. Julián married the daughter of another prosperous Mexican merchant who had also emigrated from Lebanon. They had six children, of whom Carlos was the youngest.