Rural livelihood diversification can improve food security at the household level. However, a large majority of the research has focused on male-headed households, thus overlooking experiences of female-headed households that constitute a significant portion of households in low-income and middle-income countries. This paper explores how on-farm livelihood diversification affects female-headed households' food security experiences. Using interviews and focus group discussions, the paper finds that on-farm diversification improves female-headed households’ food security. The paper also finds that on-farm diversification was more effective in improving the food security experiences of female-headed households compared with off-farm diversification. Further, the additional income from diversification creates additional benefits, including empowering women and allowing them to further diversify their livelihoods.