Shilha, now more commonly known as Tashelhiyt, Tachelhit, is a Berber language spoken in southwestern Morocco. When referring to the language, anthropologists and historians prefer the name Shilha, which is in the Oxford English Dictionary (OED). Linguists writing in English prefer Tashelhit. In French sources the language is called tachelhit, chelha or chleuh.

The Berber languages, also known as the Amazigh languages or Tamazight, are a branch of the Afroasiatic language family. They comprise a group of closely related but mostly mutually unintelligible languages spoken by Berber communities, who are indigenous to North Africa. The languages are primarily spoken and not typically written. Historically, they have been written with the ancient Libyco-Berber script, which now exists in the form of Tifinagh. Today, they may also be written in the Berber Latin alphabet or the Arabic script, with Latin being the most pervasive.