Raphael Nii Amaa Ollennu, (21 ga Mayu 1906 - 22 Disamba 1986) ya kasance masanin shari’a da alkali wanda ya zama Alkalin Kotun Koli na Ghana daga 1962 zuwa 1966, mukaddashin Shugaban Ghana a Jamhuriya ta Biyu daga 7 ga watan Agusta 1970 zuwa 31 ga Agusta 1970 da Shugaban Majalisar Ghana na daga 1969 zuwa 1972. Ollennu an haife shi a Labadi, Accra a cikin 1906 kuma na mutanen Ga ne. Iyayensa sune Wilfred Kuma Ollennu da Salomey Anerkai Mandin Abbey. Ollennu ya halarci makarantar kwana ta tsakiya, makarantar Salem a Osu. Ya yi karatun sakandare a Accra High School. Wani ɓangare na karatunsa na farko shi ne a Kwalejin Horar da bywararrun Presbyterian da ke Akropong a Yankin Gabashin Ghana, inda ya yi karatun koyarwa da ilimin addini. Ya tafi Ingila don yin karatun fikihu a Masallacin Tsakiya, Landan kuma an kira shi zuwa mashaya a 1940 bayan ya ɗauki watanni 18 don kammala karatun shekara uku wanda ya wuce tare da bambanci - ya sami yabo daga Majalisar Sarauniya. Mutum na farko a cikin danginsa da ya cancanci zama lauya, an yi masa rajista a matsayin Raphael Nii Amaa Ollennu a cikin Gold Coast (a yanzu Ghana) ya yi rajista a 1940.