Kay Williamson (1935 – January 3, 2005, Brazil), born Ruth Margaret Williamson was a linguist who specialised in the study of African languages, particularly those of the Niger Delta in Nigeria, where she lived for nearly fifty years. She has been called "The Mother of Nigerian Linguistics." Her many publications include a grammar and dictionary of the Ijo language, a dictionary of Igbo and numerous articles on diverse topics. She is also notable for proposing the Pan-Nigerian alphabet.
Kay Williamson was known for her "concern for social responsibility in linguistics."
She devoted a substantial part of her time to the Rivers Readers Project, an exercise designed to introduce reading and writing in primary schools in about 20 dialects or languages in the predominantly Ijo-speaking area. As a byproduct, several books (including primers, readers, teachers' notes, spelling manuals, and collection of folk-tales) were compiled by Kay and her collaborators.
It did not bother her that such works do not earn plaudits as academic publications. She was totally convinced that a linguist must help speakers of the languages of her research to produce texts in their languages.
Her unpublished work is being edited by Roger Blench.Williamson, Kay. 1965 (2nd ed. 1969). A grammar of the Kolokuma dialect of Ịjọ. (West African Language Monographs, 2.) London: C.U.P.. 2011: ISBN 0521175267
Williamson, Kay, and Kiyoshi Shimizu (edd.). 1968. Benue-Congo comparative wordlist: Volume I. Ibadan: West African Linguistic Society.
Williamson, Kay (ed.) 1972. Igbo-English dictionary. Benin: Ethiope Publishing Corporation.
Williamson, Kay (ed.). 1973. Benue-Congo comparative wordlist: Volume II. Ibadan: West African Linguistic Society.
Williamson, Kay (ed.) 1983. Orthographies of Nigerian languages: Manual II. Lagos: National Language Centre, Federal Ministry of Education.
Williamson, Kay, and A. O. Timitimi (edd.). 1983. Short Ịzọn-English dictionary. (Delta Series No. 3.) Port Harcourt: University of Port Harcourt Press. ISBN 978-2321-09-5, ISBN 978-978-2321-09-1
Williamson, Kay. 1984. Practical orthography in Nigeria. Ibadan: Heinemann Educational Books.
Williamson, Kay. 1971. "The Benue-Congo languages and Ịjọ". In: Current Trends in Linguistics, Vol. 7, series ed. by T. A. Sebeok, 245-306.
Williamson, Kay. 1979. "Small languages in primary education: the Rivers Readers Project as a case history". African Languages/Langues Africaines 5:2.95-l05.
Williamson, Kay. 1989. "Niger-Congo Overview". In: The Niger-Congo languages, ed. by John Bendor-Samuel, 3-45. University Press of America. ISBN 0819173754
Williamson, Kay. 1989. "Benue-Congo Overview". In: The Niger-Congo languages, ed. by John Bendor-Samuel, 246-274. University Press of America. ISBN 0819173754
Williamson, Kay, and Roger Blench. 2000. "Niger-Congo". In: African languages: an introduction, ed. B. Heine and D. Nurse, Chapter 2, 11-42. Cambridge: Cambridge University Press. ISBN 0521661781