stˈɛfən vˌiːˈɑːɹtˈɛlwɪɹkzˈɪnski wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd ˈeɪɾi sˈɪks nˈaɪntiːnhˈʌndɹɪd sˈɪksti θɹˈiː wʌzɐ pˈoʊlɪʃ laɪbɹˈɛɹiən ænd bˌɪblɪˈɑːɡɹəfɚ, hɪstˈoːɹiən ʌv pˈoʊlɪʃ ænd slˈɑːvɪk lˈɪɾɚɹᵻtʃɚ, pɹəfˈɛsɚɹ ʌv ˈædəm mˈɪkjuːˌɪkz jˌuːnɪvˈɜːsᵻɾi ɪn pˈɑːznən.
Stefan Vrtel-Wierczyński (1886 - 1963) was a Polish librarian and bibliographer, historian of Polish and Slavic literature, Professor of Adam Mickiewicz University in Poznań.