Plant parasitic nematodes significantly affect banana production in Tanzania. The general objective of the Banana Nematodes Baseline Project is to generate information on occurrence, abundance, diversity and distribution of nematodes in banana-growing regions, which will be useful in the development of management strategies for nematodes. This poster provides an overview of a survey conducted in four agro-ecological zones comprising 10 major banana-growing regions of Tanzania. The incidence of nematodes was assessed and the information was used to generate nematode distribution maps that show the geographical distribution of the key plant parasitic nematodes in major banana-growing areas of Tanzania.