This study examined the Strengthening Food Security through Agricultural Extension: Evidence from Smallholder Farmers in Ukwuani LGA, Delta State, Nigeria. A descriptive survey design and multi-stage sampling technique were used to select 150 smallholder farmers. Data were collected using a structured questionnaire and analyzed using descriptive statistics (frequencies, percentages, means, and standard deviations), while hypotheses were tested using independent sample t-tests and ANOVA. The findings revealed that agricultural extension services positively influence food availability and significantly enhance food accessibility and nutritional practices among smallholder farmers. A major strategy identified for improving extension delivery was the provision of adequate transportation and mobility support for extension agents to effectively reach rural communities. Hypothesis testing showed no significant differences in perceptions of extension service roles based on gender (p>0.05), years of farming experience (p>0.05), educational level (p>0.05), or access to formal training (p>0.05). These results suggest that the perceived benefits of agricultural extension services are consistent across different farmer demographics. Based on the findings, it was recommended that the Delta State Ministry of Agriculture, in collaboration with local governments, should increase the number of trained extension personnel and ensure regular farm visits. This would promote knowledge transfer, encourage the adoption of improved agricultural practices, and provide timely support to farmers, thereby enhancing food security in the region.