This work determined the potential implication of firm specific factors on profitability of listed Insurance companies in Nigeria, 2015 to 2019. Firm specific factors are Firm Size, FSSIZE; Firm Age FSAGE; Firm Leverage FSLE; and Firm Liquidity FSLQ and the dependent variable is Profitability-Return on Asset ROA. This study applied ex-post facto research design and the population comprised all the quoted insurance companies from Nigerian Stock Exchange NSE, 2014-2019. A purposive sampling technique selected 10 listed insurance firms with the required annual reports made available to the public in, 2020 NSE. The statistical techniques employed: Descriptive statistics; Pearson Correlation Matrix and Robust Least Square (RLS) Regression. The results show that the R-squared value is 0.0342, which implies that all the independent variables jointly explain only about 3.42% of the systematic variations in the (ROA). The final findings indicated that: FSSIZE and FSLEV have negative and insignificant implication on ROA; FSAGE and FSLIQ have positive and insignificant implication on ROA of pooled insurance firms for the period in Nigeria.