There are several types of plural formation observed for Dholuo nouns. The type ofplural formation selected by a particular singular noun is unpredictable and therefore encoded in the lexicon. As such, speakers must memorize which plural form isapplicable to which noun (Tucker 1994). Even though there are many descriptivestudies on Dholuo, there is little in-depth published work focusing on the morphophonology of plural formation in the language. Even the most sophisticated ofanalyses encounter problems when a full range of data is taken into consideration.This paper aims to fill this lacuna by (i) identifying and classifying a full rangeof Dholuo plural noun formation types and (ii) providing a detailed synthesis andanalysis of the various phonological and morphophonological processes that takeplace in their formation.