Weinreich (Yiddish: ווײַנרײַך, Hebrew: ויינרייך) is a surname. Notable people with the surname include:
Bernd Weinreich (born 1948), composer, musicologist (de)
Frank Weinreich (born 1962), German author (de)
Gustav Weinreich (1886–1980), Danish furniture maker (da)
Jan Weinreich (1490–1560), Polish printer (pl)
Jens Weinreich (born 1965), German sport-journalist (de)
Max Weinreich (1893/94, Kuldīga – 1969), Jewish-Latvian linguist specializing in Yiddish
Uriel Weinreich (1926–1967), Jewish-American linguist specializing in Yiddish
Otto Weinreich (1886–1972), Jewish German classical philologist (de)
Regina Weinreich, writer, journalist, teacher
Torben Weinreich (born 1946), Danish professor (no)
