Lebanese Arabic, or simply Lebanese, is a variety of North Levantine Arabic, indigenous to and primarily spoken in Lebanon, with significant linguistic influences borrowed from other Middle Eastern and European languages and is in some ways unique from other varieties of Arabic. Due to multilingualism and pervasive diglossia among Lebanese people, it is not uncommon for Lebanese people to code-switch between or mix Lebanese Arabic, French, and English in their daily speech. It is also spoken among the Lebanese diaspora.

In Lebanon, most people communicate in the Lebanese variety of Levantine Arabic, but Lebanon's official language is Modern Standard Arabic (MSA). French is recognized and used next to MSA on road signs and Lebanese banknotes. Lebanon's native sign language is the Lebanese dialect of Levantine Arabic Sign Language. English is the fourth language by number of users, after Levantine, MSA, and French. Most Armenians in Lebanon can speak Western Armenian, and some can speak Turkish.