Nigeria’s economy has remained heavily dependent on crude oil revenues for decades, exposing the nation to severe vulnerabilities due to global oil price volatility and limiting inclusive and sustainable growth. This study examines the imperative of diversifying the Nigerian economy by strengthening the real sector—agriculture, manufacturing, and services. Using secondary data from national and international sources, descriptive and econometric analyses were conducted to evaluate sectoral performance trends, contributions to GDP, and key drivers of structural transformation. Findings reveal that while the services sector demonstrates robust growth and currently dominates GDP contribution, the agricultural sector underperforms despite its vast potential for job creation and food security. The manufacturing sector remains comparatively weak, constrained by infrastructural deficits, exchange rate instability, and low industrial capacity utilization. Econometric results show that employment in agriculture positively influences agricultural output, although not significantly, while sectoral shifts and real sector contribution to GDP negatively impact agricultural output, signaling resource movement toward non-agricultural activities. Comparative assessments with emerging economies highlight Nigeria’s slow progress in economic diversification. The study concludes that without coordinated and transformative investments in productivity, value addition, and infrastructure across real sectors, Nigeria’s diversification agenda will remain unattainable. It recommends a “big push” strategy, targeted industrialization, support for agro-processing, digital infrastructure development in services, and enhanced policy consistency to drive sustainable and inclusive economic growth.

Keywords: Economic Diversification; Real Sector; Agriculture; Manufacturing; Nigeria