  Free arbitrary spin massless and self-dual massive fields propagating in
$AdS_5$ are investigated. We study totally symmetric and mixed symmetry fields
on an equal footing. Light-cone gauge action for such fields is constructed. As
an example of application of light-cone formalism we discuss $AdS/CFT$
correspondence for massless arbitrary spin $AdS$ fields and corresponding
boundary operators at the level of two point function.
