Food and nutrition insecurity are on the rise in Nigeria, particularly among smallholder farmers, many of whom are poor. This study is aimed at identifying factors associated with smallholder crop farmers’ dietary diversity in southern Nigeria. Using a multistage sampling procedure, data was collected from 2368 farmers across six states and analysed using descriptive, k-means clustering and multinomial logistic regression. Results showed that 27.36%, 46.83%, and 25.81% of the farmers were categorized as having poor food consumption, borderline and acceptable food consumption respectively.