Ortho-aminobenzoates are a group of chemical compounds that contain an ortho-substituted amino benzoate functional group, which consists of a benzene ring with a carboxylate group (–COO−) and an amino group (–NH2) attached to adjacent carbon atoms on the benzene ring. This group is often abbreviated as "o-ABA" or "OABA". These compounds have various applications, including use as pharmaceuticals, dyes, and plastic additives.