The main purpose of this paper is to introduce some characterizations for a certain generalized Bessel function of the first kind to be in the subclasses S p (λ, α, β) and T S p (λ, α, β) of normalized analytic functions in the open unit disk U and followed by various corollaries related to the well-known subclasses of starlike and convex functions. Furthermore, we consider some operators related to the generalized Bessel function.