This study empirically investigated integrated reporting and corporate financial performance of listed insurance companies in Nigeria for the period 2010 to 2019. The study employed ex post facto and correlational research design. The sample size of the study consisted of insurance firms listed on the Nigerian Stock Exchange. The data for the study was obtained from the published annual financial statements of the sampled insurance companies and descriptive statistics, diagnostic test, unit root test, was used for data analysis while multiple regression analysis for the test of hypotheses. The result from the regression analysis revealed that integrated reporting positively and significantly affects the corporate financial performance of listed insurance firms in Nigeria. Also the control variables of debt, liquidity, corporate size and risk suggested both negative and positive significant influence on corporate financial performance of listed insurance firms in Nigeria. The paper concluded that integrated reporting affects the corporate financial performance of listed insurance companies in Nigeria. Therefore, the paper recommends amongst others that the Financial Reporting Council of Nigeria (FRCN) should make the adoption of integrated reporting compulsory across companies listed on the Nigerian Stock Exchange in a bid to improve the relationship between integrated reporting and financial performance of firms.