The purpose of this study is to examine the relationship between Chief Financial Officers’ characteristics and firm performance of firms listed on The Market for Alternative Investment, Thailand. The 257 observations of firms listed on The Market for Alternative Investment during 2019-2020 data are collected from annual reports, 56-1 forms, and firms’ financial statements. Using multiple regression analysis, this study finds that the CFO who graduated in accounting or finance and being member of major shareholders’ family is positively associated to firms performance. Moreover, firms’ industry which is control variable is also associated to firms’ sustainability disclosures. These results imply that CFO characteristics have effects on performance of firms listed on The Market for Alternative Investment, Thailand.