An imaging apparatus for authentication includes: a first imaging unit that obtains a first image used in a first authentication process by imaging a target person; a second imaging unit that obtains a second image used in a second image process by imaging the target person in an imaging range narrower than that of the first imaging unit; a drive unit that integrally drives the first imaging unit and the second imaging unit; and a drive control unit that controls the drive unit on the basis of the first image.