An exposure apparatus including a projecting optical system for projecting
a pattern of the original onto a substrate, and an original stage being
movable while carrying the original thereon. The original stage includes
(i) a first holding portion for holding the original and having a first
surface to be contacted to one surface of the original, the first holding
portion being configured to position the original in a direction
perpendicular to the surface, and (ii) a second holding portion for
holding the original and having a second surface to be contacted to the
surface, the second holding portion being elastically or resiliently
deformable.