Ostap as a Baby Name. Meaning and Origin of Ostap

What is the meaning of the name Ostap ?

The baby name Ostap is a Male name , 2 syllables long and is pronounced /osˈtɑp/ — oh-STAP (stress on second syllable).

Ostap is Ukrainian in Origin.

Ostap is a Ukrainian male given name, a vernacular form of Church Slavonic Evstafii, ultimately from Greek Eustathios (“steadfast, well-founded”). In East Slavic usage the name often merged with the related Greek Eustachios (“fruitful”), so traditional explanations include both “steadfast” and “fertile/abundant.” Belarusian Astap and the rarer Russian Ostap reflect the same root; cognates include Ukrainian Yevstafii/Yevstakhii, Russian Evstafii, Greek Efstathios/Eustathios, Latin Eustathius, English Eustace, and Polish Eustachy. Diminutives in Ukrainian include Ostapko and Ostapchyk.

The name appears in records from the Polish-Lithuanian Commonwealth and Cossack Ukraine (e.g., Cossack leader Ostap Dashkevych). It remained in folk and clerical calendars through the 19th century, carried by figures like the blind minstrel Ostap Veresai, and entered wider popular culture via Ostap Vyshnia (pen name of humorist Pavlo Hubenko) and the iconic fictional character Ostap Bender, which helped keep the name familiar across Eastern Europe.