Wacław

Wacław is a Polish masculine given name. It is a borrowing of, Latinized as Wenceslaus.

For etymology and cognates in other languages, see Wenceslaus.

It may refer to:
 * Wacław Cimochowski (1912–1982), Polish philologist
 * Wacław Gajewski (1911–1997), Polish geneticist
 * Wacław Hański (1782–1841), Polish nobleman
 * Wacław Kiełtyka (born 1981), Polish musician
 * Wacław Kopisto (1911–1993), Polish Army officer
 * Wacław Kuchar (1897–1981), Polish athlete
 * Wacław Leszczyński (1605–1666), Primate of Poland
 * Wacław Maciejowski (1792–1883), Polish historian
 * Wacław Micuta (1915–2008), Polish economist
 * Wacław Seweryn Rzewuski (1784–1831), Polish explorer, poet and orientalist
 * Wacław Sieroszewski (1858–1945), Polish writer
 * Wacław Sierpiński (1882–1969), Polish mathematician
 * Wacław Szybalski (1921–2020), Polish-American medical researcher, geneticist
 * Wacław Szymanowski (1859–1930), Polish sculptor and painter
 * Wacław of Szamotuły (c. 1520 – c. 1560), Polish composer
 * Wacław Zagórski (1909–1982), Polish lawyer
 * Wacław Michał Zaleski (1799–1849), Polish poet and writer
 * Wacław Zalewski (1917–2016), Polish engineer
 * Wacław Zawadowski (1891–1982), Polish painter

Other forms of Wenceslaus exist natively in Polish, but only as a surname, including Wącław, Węcław, and Więcław, as well as their respective phonetic spellings Woncław, Wencław, and Wiencław.