Native speakerism (/neɪtɪv spi:kərɪzm/) is the assignation of prestige to varieties of a language (e.g. English) spoken by its native speakers (e.g. native English speakers), and hence making the value judgement that native varieties (e.g. native English) are superior to non-native forms (e.g. non-native English). It is usually used as a pejorative.
By extension, it can also refer to discrimination in favour of native speakers, and against non-native speakers. In the ESL jobs market, that means discrimination in favour of native English speaker teachers and against non-native English speaker teachers.
Adrian Holliday coined the term in his 2005 book The Struggle to Teach English as an International Language (Oxford University Press).