Tags:   **Abstract** Capital intensity is an important measure of the extent to which a company relies on long-term physical assets and capital investment to support its business operations. It reflects the amount of capital invested in property   Plant and equipment and other productive assets relative to the level of sales or operating activity. Profitability represents the ability of a company to generate earnings from its resources and operations and is an important indicator of corporate efficiency and financial sustainability. For manufacturing companies   Capital intensity is particularly relevant because production activities often require substantial investment in factories   Machinery   Equipment   Technology   Transportation facilities   And other productive assets. High capital intensity may increase production capacity   Improve operational efficiency   Generate economies of scale   And support long-term growth. However   Substantial investment in fixed assets may also increase depreciation   Maintenance   Energy   Financing   And other operating costs   Particularly where productive capacity is underutilized. In Nigeria   Listed manufacturing companies operate in an economic environment characterized by inflation   Exchange rate volatility   High energy costs   Inadequate infrastructure   Rising financing costs   Supply chain disruptions   And fluctuations in consumer demand. These conditions can significantly affect the cost of acquiring and maintaining productive assets and the ability of companies to generate adequate returns from their capital investments. Effective management and utilization of capital assets are therefore essential for sustaining profitability. Regulatory institutions such as the Financial Reporting Council of Nigeria (FRCN)   The Securities and Exchange Commission (SEC)   And the Nigerian Exchange Group (NGX) promote transparent financial reporting and corporate governance practices that enable stakeholders to evaluate the financial position and performance of listed manufacturing companies. Despite these regulatory efforts   Manufacturing companies differ considerably in their levels of capital intensity and profitability   Raising questions about whether heavy investment in productive assets translates into improved financial performance. Although previous studies have examined capital investment   Asset utilization   And corporate profitability   Empirical evidence regarding the influence of capital intensity on the profitability of listed manufacturing companies in Nigeria remains limited and inconclusive. Against this background   This study investigates the influence of capital intensity on the profitability of listed manufacturing companies in Nigeria. The study is anchored on the Resource-Based View (RBV)   Capital Investment Theory   And Trade-Off Theory. The Resource-Based View suggests that productive physical assets can constitute valuable organizational resources capable of improving production efficiency   Competitive advantage   And long-term profitability when effectively utilized. Capital Investment Theory emphasizes that investment in productive assets should generate future economic benefits through increased production capacity   Efficiency   And revenue generation. Trade-Off Theory provides a basis for understanding the balance between the benefits of capital investment and its associated costs   Including depreciation   Maintenance   Financing costs   And the risk of underutilized capacity. Collectively   These theoretical perspectives provide a comprehensive framework for explaining the relationship between capital intensity and profitability of listed manufacturing companies in Nigeria. The study adopts a quantitative research design using a structured questionnaire administered to chief executive officers   Chief financial officers   Finance managers   Management accountants   Cost accountants   Production managers   Financial controllers   Internal auditors   External auditors   And other professionals involved in financial and operational management within selected listed manufacturing companies in Nigeria. A stratified random sampling technique will be employed to ensure adequate representation of relevant manufacturing subsectors listed on the Nigerian Exchange Group (NGX). Capital intensity will be measured using the ratio of property   Plant and equipment to total assets   Property   Plant and equipment to sales   Fixed assets per unit of sales   Capital investment intensity   Investment in productive assets   And the extent of reliance on capital-intensive production processes   While profitability will be measured using Return on Assets (ROA)   Return on Equity (ROE)   Net profit margin   Operating profit margin   Earnings per share   And profit growth. Primary data collected from respondents will be analyzed using descriptive statistics to summarize respondents' demographic characteristics and perceptions regarding capital intensity and profitability. Structural Equation Modeling (SEM) will be employed to examine the influence of capital intensity on profitability. The measurement model will be evaluated using Cronbach's Alpha   Composite Reliability (CR)   Average Variance Extracted (AVE)   And Confirmatory Factor Analysis (CFA) to establish the reliability and validity of the research instrument. Additional diagnostic tests   Including multicollinearity assessment   Common method bias   And model fit indices such as the Comparative Fit Index (CFI)   Tucker-Lewis Index (TLI)   Root Mean Square Error of Approximation (RMSEA)   And Standardized Root Mean Square Residual (SRMR)   Will be conducted to ensure the adequacy   Consistency   Reliability   And robustness of the structural model. The study anticipates that capital intensity will have a significant influence on the profitability of listed manufacturing companies in Nigeria. Efficient capital investment is expected to improve production capacity   Reduce unit production costs through economies of scale   Increase operational efficiency   Support technological advancement   And enhance the ability of manufacturing companies to meet growing market demand. Companies that effectively utilize their productive assets may therefore generate higher revenues and improved profit margins. However   Excessive capital intensity may negatively affect profitability where substantial investments in fixed assets are not accompanied by adequate capacity utilization or corresponding increases in sales. High capital intensity may increase depreciation   Maintenance   Energy   Insurance   And financing costs   Thereby reducing profit margins. This challenge may be particularly important in Nigeria because high energy costs   Infrastructure constraints   Exchange rate volatility   And supply chain disruptions can increase the cost of operating capital-intensive production facilities. Consequently   The effect of capital intensity on profitability is expected to depend on the efficiency with which companies utilize their fixed assets   The level of capacity utilization   Market demand   Production technology   And management's ability to control associated operating costs. Overall   Efficient and strategically managed capital intensity is expected to contribute significantly to sustainable profitability among listed manufacturing companies in Nigeria. This study is expected to make significant theoretical and empirical contributions to the literature on management accounting   Capital investment   Asset management   Corporate finance   And financial performance by providing comprehensive evidence on the relationship between capital intensity and profitability of listed manufacturing companies in Nigeria. Unlike previous studies that broadly examined capital expenditure   Fixed assets   Or investment decisions   This research specifically evaluates capital intensity as a determinant of profitability using primary data and Structural Equation Modeling (SEM). The findings will provide valuable insights for listed manufacturing companies   Financial managers   Management accountants   Cost accountants   Production managers   Auditors   Investors   Financial analysts   The Financial Reporting Council of Nigeria (FRCN)   The Securities and Exchange Commission (SEC)   The Nigerian Exchange Group (NGX)   Professional accounting bodies   Policymakers   Regulators   And academic researchers regarding the implications of capital-intensive operations for corporate profitability. The study will also provide evidence-based recommendations for improving capital budgeting decisions   Optimizing fixed asset utilization   Increasing production capacity utilization   Controlling asset-related operating costs   Adopting appropriate production technologies   And ensuring that capital investments generate adequate returns and sustainable profitability among listed manufacturing companies in Nigeria. **Keywords:** Capital intensity   Profitability   Listed manufacturing companies   Capital investment   Fixed assets   Property   Plant and equipment   Asset utilization   Capacity utilization   Management accounting   Structural Equation Modeling (SEM)