jˈɑːʃɪnˌɑːbuː ˌɔɪɐkˈɑːwə, bˈɔːɹn ˈɔːɡəst nˈaɪn, nˈaɪntiːnhˈʌndɹɪd θˈɜːɾi θɹˈiː ɪz ɐn ɐmˈɛɹɪkən fˈɔːɹmɚ kˌɑːmpətˈɪʃən swˈɪmɚ, əlˈɪmpɪk tʃˈæmpiən, ænd fˈɔːɹmɚ wˈɜːld ɹˈɛkɚdhˈoʊldɚɹ ɪnðə wˈʌnhˈʌndɹɪdmˈiːɾɚ bˈækstɹoʊk.
Yoshinobu Oyakawa (, born August 9, 1933) is an American former competition swimmer, Olympic champion, and former world record-holder in the 100-meter backstroke.