Linguistic discrimination is unfair treatment of people which is based on their use of language and the characteristics of their speech, including their first language, their accent, the perceived size of their vocabulary, their modality, and their syntax. For example, an Occitan speaker in France will probably be treated differently from a French speaker. Based on a difference in use of language, a person may automatically form judgments about another person's wealth, education, social status, character or other traits, which may lead to discrimination.

Tove Anita Skutnabb-Kangas was a Finnish linguist and educator. She is known for coining the term linguicism to refer to discrimination based on language.