Stanislaus, deriving from the Latin 'stanus', meaning 'steadfast' and 'laus', meaning 'praise', is a name of Slavic origin. It was introduced into Western Europe during the Middle Ages by way of Poland and Bohemia. Historically, it has been associated with figures like Stanislaus I, Duke of Poland, who played a significant role in the political landscape of medieval Europe. The name Stanislaus also appears in various forms across cultures, such as Stanislaw in Polish, Stanislav in Czech, and Stanislavos in Greek.
The name Stanislaus experienced significant fluctuations in popularity over the years, with a peak of 46 births in 1916 and a low of 5 births in several years spanning from 1884 to 2013. The total number of births bearing this name is 787 across these years.