This study investigated the agricultural diversification strategies in enhancing food security at the household level, focusing on the unique context of Chilanga District in Lusaka Province. With a growing population and increasing pressure on agricultural resources, ensuring food security had become a critical concern in Zambia. Through a mixture of qualitative and quantitative research methodology, this study examined the agricultural diversification strategies adopted by households in Chilanga District. It also evaluated the effects of agricultural diversification strategies on household food security. The study revealed that more than 41% of the farmers practiced crop diversification strategies, through the cultivation of multiple crops. 100% agreed that it enhanced food availability, access, and utilization within households where more than 75% households had meals twice a day. Agricultural practices not only mitigated risks associated with climate variability and market fluctuations but also improved dietary diversity and nutritional intake. However, challenges such as limited access to resources, inadequate extension services, and market constraints hindered the full potential of diversification. The study underscored the need for supportive policies, investment in agricultural infrastructure to foster sustainable diversification practices. The study provided valuable lessons and policy implications for enhancing food security through agricultural diversification in similar contexts. It also underscored the importance of promoting diversified agricultural practices as a sustainable pathway towards improving food security and livelihoods at the grassroots level. The study contributed to the existing literature on agricultural diversification and food security by offering empirical evidence and practical recommendations tailored to the specific needs of households in Chilanga District.