Last name Venceslav (Wenzel 
, Venceslav 
, Венцеслав 
) , worldwide, is a common cognomen. The family name Venceslav is habitual in Western Europe, particularly Germany, where it is quite a common surname, Liechtenstein, and Austria. In absolute terms, this name is the most popular in Germany, the United States, and Brazil. Much less frequently, Venceslav is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wenzel | Germany, Czechia, Austria, United States, Brazil |
| Venceslav | Romania, Croatia, Bulgaria, United States, Slovenia |
| Венцеслав | Russia, Ukraine, Bulgaria |
Vencel, Venceslao, Ventseslav, Venćeslav, Venčeslav, Viatcheslav, Vjacseszlav, Vjatjeslav, Vjatšeslav, Vjačeslav, Vyacheslav, Václav, Věnceslav, Wacław, Wenzeslaw, Wjatscheslaw, В'Ячеслав, Вацлав, Вацлаў, Венцел, Венцель, Венчеслав, Вячаслаў, Вячеслав, and Слава