This study analysed inventory management emphasis and its possible effect on financial sustainability of Nigerian quoted manufacturing firms. The study made use of the research design, ex-post facto. The study focused on manufacturing firms and ten were purposely sampled from the Nigerian Stock Exchange. Secondary data were obtained from the annual financial reports of the selected manufacturing firms over a ten-year period, 2008-2017. Descriptive statistics and inferential statistics (panel regression) were the analyses conducted for the study. The findings which emanated from the analysis indicated inventory turnover having a significant positive effect on financial sustainability. The conclusion of the study was that inventory management influences financial sustainability significantly. It also recommended that management of companies should develop and implement policies that will ensure good inventory management and also consider the policies of their suppliers and customers purchase pattern in order to have sustainable financial performance.