Most people in the world speak two or more languages. Language contact is thus a ubiquitous phenomenon which entails a wide range of social, political and linguistic consequences. This course provides a survey of language contact phenomena, focusing on contact-induced changes in varieties of English. Topics to be discussed during the course include Bilingualism and Multilingualism, Code-Switching, Contact-Induced Language Change, Second Language Acquisition and Language Shift, Language Death, Pidgins and Creoles.