In this paper, we define a new function, namely, harmonically
α
,
h
−
m
-convex function, which unifies various kinds of harmonically convex functions. Generalized versions of the Hadamard and the Fejér–Hadamard fractional integral inequalities for harmonically
α
,
h
−
m
-convex functions via generalized fractional integral operators are proved. From presented results, a series of fractional integral inequalities can be obtained for harmonically convex, harmonically
h
−
m
-convex, harmonically
α
,
m
-convex, and related functions and for already known fractional integral operators.