In this article, we prove some fractional versions of Hadamard-type inequalities for strongly exponentially
α
,
h
−
m
-convex functions via generalized Riemann–Liouville fractional integrals. The outcomes of this paper provide inequalities of strongly convex, strongly
m
-convex, strongly
s
-convex, strongly
α
,
m
-convex, strongly
s
,
m
-convex, strongly
h
−
m
-convex, strongly
α
,
h
−
m
-convex, strongly exponentially convex, strongly exponentially
m
-convex, strongly exponentially
s
-convex, strongly exponentially
s
,
m
-convex, strongly exponentially
h
−
m
-convex, and exponentially
α
,
h
−
m
-convex functions. The error estimations are also studied by applying two fractional integral identities.