Probiotics are defined as live microorganisms, which, when administered in adequate doses, confer health benefits on the host. With the increased consumption of probiotics, there have been concerns regarding their safety. Therefore, in this study, evaluation of the safety of Lactiplantibiacllus plantarum KF511 (LPKF511) was conducted according to the guidelines of the Ministry of Food and Drug Safety, South Korea. LPKF511 is known to attenuate lung damage and alleviate inflammation. We conducted antimicrobial susceptibility test, a hemolytic test, measurement of cytotoxicity and D-lactate production, and a bile salt hydrolase (BSH) activity test. The results of antimicrobial susceptibility test revealed that LPKF511 was susceptible to 7 antimicrobials recommended by guidelines of the European Food Safety Authority for bacterial susceptibility testing. In addition, LPKF511 exhibited no hemolytic activity, BSH activity, or cytotoxicity against Caco-2 cells. These results support the use of LPKF511 as a health functional food ingredient without safety concerns.