This study was initiated to investigate the proximate and some mineral compositions of ripe plantain peels and palm oil mill slurry obtained from some locations in Edo State, Nigeria. Results showed that the ripe plantain peels collected from Auchi, Ekpoma and Benin gave crude protein (CP) of 10.50, 11.08 and 10.50 % respectively; EE of 24.03, 25.02 and 23.84% respectively, Ash of 11.93, 12.47 and 11.00 % and 30.73, 34.87 and 37.15 % for NFE respectively. The results also showed that CF and NFE were significantly (P<0.05) different with regard to Locations as the highest value 10.66 % were obtained from Benin City, which significantly (P<0.05) differ from Ekpoma (7.99 %) and close to the value 9.59 % recorded for Auchi. The proximate composition of the palm oil mill slurry (POMS) from OKOMU, PRESCO, UDO and Benin City revealed crude protein (CP) values of 2.62, 2.04, 3.79 and 3.21 % respectively, EE of 15.76, 17.59, 12.50 and 17.62 % respectively. The comparison between local processor and industrial processor revealed that the locally processed oil palm slurry gave higher crude protein content of 3.50 % compared with 2.33 % from industrially processed slurry and the locally processed slurry had higher crude fat content. This may be accounted for by the efficiency of industrial facilities and processing methods. The results of this study has shown the proximate composition of ripe plantain peels and palm oil mill slurry as non-conventional feedstuffs that can be used effectively as animal feed to reduce production cost.