Onesimo Nesib (kwa Kioromo: Onesimoos Nasiib; 1856 hivi – 21 Juni 1931) alikuwa Mworomo aliyejiunga na madhehebu ya Walutheri (31 Machi 1872) akawa mmisionari nchini Ethiopia akatafsiri Biblia ya Kikristo katika Kioromo. Hivyo amekuwa mwanzilishi wa fasihi ya Kioromo ya kisasa. Onesimo Nesib anatazamwa kama mtakatifu katika Lutheran Book of Worship ya Marekani. Sikukuu yake huadhimishwa tarehe 21 Juni. The Bible. 1893. The Galla Spelling Book. Moncullo: Swedish Mission Press, 1894. Arén, Gustav. 1978. Evangelical Pioneers in Ethiopia. Stockholm: EFS Vorlage. Fighting Against the Injustice of the State and Globalization: Comparing the African American and Oromo Movements p.73. Asafa Jalata, 2001 DACB article on Onesimos Nesib Mekura Blucha, "Onesimos Nasib's Pioneering Contributions to Oromo Writing", Nordic Journal of African Studies 4(1): 36-59 (1995)