This study was conducted to investigate the influence of consumerism on the performance of businesses in Nigeria. The worrisome trend of arbitrary increase in prices of goods, distribution of sub-standard products, and increased information asymmetry between the producers/sellers and consumers have emerged recently in Nigeria, calling into question the effectiveness of consumer protection and the enforcement of the rights of the consumers in Nigeria by regulatory authorities such as Consumer Protection Council (CPC), Federal Competition and Consumer Protection Council (FCCPC), Standards Organization of Nigeria (SON) and others. The objectives of the study included to determine the forms of consumerism in Nigeria, and find out if these forms of consumerism influences the performance of businesses in Nigeria. An explanatory research design was adopted in this study, and both qualitative and qualitative data were used in the study. Thematic analysis was used in the analysis of the data collected from carefully selected articles from reputable journals. From the findings, consumer protection, ethical consumerism, grievances handling consumerism, and information consumerism were identified as the different forms of consumerism in Nigeria. Again, consumerism was found to influence the performance of businesses in Nigeria. It was concluded that consumerism is vital if businesses in Nigeria seriously want to improve their financial and nonfinancial performance. Recommendations made include the need for businesses in Nigeria to actively and holistically embrace consumerism as a conduit that benefits the consumers, improve the socio-economic healthiness of the Nigerian business environment, enhance their performance, and fully integrate all facets of consumerism into a workable framework for them and the entire society.