The study empirically reviewed the Impact of Technical and Vocational Education in Nation Building, with a view to analyzing the extent to which trained manpower, technical knowledge and vocational skills had impacted in Nigeria. The study employed descriptive research design. The respondents comprised of 2016/2017 final year students in School of Business Education, Enugu State College of Education (Technical). The primary data were collected with the aid of a structured 5-point likert scale questionnaires. Secondary data were generated from journals, and other scholarly publications. Three Hypotheses were formulated and tested in this study. The questionnaires were distributed to a sample size of 276 reduced from a population of 887 using Taro Yamane (1967) formula while Analysis of Variance (ANOVA) was employed to test the hypotheses. The findings showed that there is significant trained manpower and provision of Technical knowledge & vocational skills necessary for agricultural, industrial, commercial and economic development in Nigeria. The study concludes that Colleges of Education (Technical) training has and is still contributing to nation building. Constant inspections from relevant educational agencies, improved fundings, collaboration with professional institutions, rehabilitation and participation of other sectors for the promotion of technical and vocational researches that will turn Nigeria into a technological nation is recommended.