Vyšniauskas is a Lithuanian surname, a Lithuanized form of the Polish surname Wiśniewski, see the latter article for other forms of the surname.
Notable people with the surname include:
Bronius Vyšniauskas (1923–2015), Lithuanian sculptor Ovidijus Vyšniauskas (born 1957), Lithuanian musician Ramūnas Vyšniauskas (born 1976), Lithuanian weightlifter Vidmantas Vyšniauskas (born 1969), Lithuanian footballer