Stanislaus \s-tanis-laus, st(a)-ni-slaus\ as a boy's name is of Slavic origin. The patron saint of Poland, Saint Stanislaus, was an 11th-century bishop and martyr.

Stanislaus has 10 variant forms: Stana, Stanek, Stanicek, Stanislas, Stanislav, Stanislav, Stanislaw, Stannes, Stanousek and Stasio.

Baby names that sound like Stanislaus are Stanley, Stanly, Stanlee and Stanlea.