Ó Maoilmhichíl is an uncommon surname of Irish origin devolving into the common Irish surnames Mitchell and Mulvihill.
ˌoʊɐkjˈuːt mˈiːlmhɪtʃˌɪl ɪz ɐn ʌŋkˈɑːmən sˈɜːneɪm ʌv ˈaɪɹɪʃ ˈɔːɹɪdʒˌɪn dɪvˈɑːlvɪŋ ˌɪntʊ ðə kˈɑːmən ˈaɪɹɪʃ sˈɜːneɪmz mˈɪtʃəl ænd mˈʌlvɪhˌɪl.