Zvejnieks (Old orthography: Sweineek(s); feminine: Zvejniece) is a Latvian occupational surname, derived from the Latvian word for "fisherman". Notable people with the surname include:
Alberts Zvejnieks, Latvian wrestler Kristaps Zvejnieks (born 1992), an Alpine ski racer and inline Alpine slalom race; Roberts Zvejnieks (born 1997), a short track speed skater.
See also
Zvejnieks Liepāja, Latvian football club