In this study, the antibacterial and cytotoxic activities of some amino acid methyl esters (L-methionine, L-phenylalanine, L-histidine, L-lysine, L-tryptophan, and L-tyrosine) were investigated. The effect of amino acid methyl ester compounds on antibacterial performance was determinated against Gram-negative and Gram-positive bacteria. The effect of amino acid esters on cell viability was investigated against cancerous and non-cancerous cell lines using the MTS assay. The results showed the substances had low antimicrobial effect on both Gram-negative and Gram-positive bacteria. In addition, it was found that the studied substances did not have a toxic effect on cell growth in non-cancerous cells. For this reason, it is thought that the results obtained will contribute to research on new synthesizable compounds based on amino acid esters and studies on drug development.