Some Hermite-Hadamard type inequalities for generalized k-fractional integrals (which are also named [Formula: see text]-Riemann-Liouville fractional integrals) are obtained for a fractional integral, and an important identity is established. Also, by using the obtained identity, we get a Hermite-Hadamard type inequality.
Keywords: Hermite-Hadamard inequality; [Formula: see text]-Riemann-Liouville fractional integral; [Formula: see text]-fractional integral; generalized k-fractional integral.