Prof.Kithaka wa Mberia was born in 1955 in Tharaka in the Eastern Province of Kenya. He attended primary school in Tharaka before joining Chuka High School and then Alliance High School. In 1976, he enrolled at the University of Nairobi and graduated with a Bachelor of Arts (Honours) in 1979. He later obtained an M.A. and PhD from the same university.
Since 1982 Prof. Kithaka wa Mberia has been teaching and doing research in the Depertment of Linguistics and Languages, University of Nairobi. He has also taught in the United States of America as a Fullbright Scholar-in-Residence at Virginia State University, Petersburg. Moreover, over the years, he has taught students from several foreign universities and university colleges during their semesters in Kenya. He has also served as an External Examinor to both local and foreign universities. Besides publishing papers in academic journals, Prof. Kithaka wa Mberia has to his credit numerous books of poetry and drama. These include Kifo Kisimani, Mchezo wa Karata, Natala, Bara Jingine, Maua Kwenye Jua la Asubuhi, Redio na Mwezi, Msimu wa Tisa and Zimwi la Theluji. Several of these books have been translated and published in English.