Wien is the German language name for Vienna, the city and federal state in Austria. Wien may also refer to:

Wilhelm Wien (1864–1928), German physicist

Wien's displacement law, law of physics

Wien Air Alaska, American airline 1927-1985

Wien, Wisconsin, United States

Wien River, in Vienna, Austria

Noel Wien (1899-1977), American aviator

Wien International Scholarship, a scholarship instituted by Brandeis University

Wien bridge oscillator, a type of electronic oscillator