2-Aminopyridine compounds of Formula I are provided, and various substituents including stereoisomers, tautomers, and pharmaceutically acceptable salts thereof, useful for modulating USP7, and for treating cancer and immune disorders such as inflammation mediated by USP7. Methods of using compounds of Formula I for in vitro, in situ, and in vivo diagnosis, and treatment of such disorders in mammalian cells, or associated pathological conditions, are disclosed.