A martensitic stainless steel which has a chemical composition, in mass %, that C: 0.001 to 0.01 %, Si: 0.5 % or less, Mn: 0.1 to 3.0 %, P: 0.04 % or less, S: 0.01 % or less, Cr: 10 to 15 %, Ni: 4 to 8 %, Mo: 2.8 to 5.0 %, Al: 0.001 to 0.10 %, N: 0.07 % or less, Ti: 0 to 0.25 %, V: 0 to 0.25 %, Nb: 0 to 0.25 %, Zr: 0 to 0.25 %, Cu: 0 to 1.0 %, Ca: 0 to 0.005 %, Mg: 0 to 0.005 %, La: 0 to 0.005 %, Ce: 0 to 0.005 %, and the balance: Fe and impurities, with a proviso that the following formulae (1) and (2) are satisfied, and exhibits a yield stress of 758 to 860 MPa. 922.6 - 554.5C - 50.9Mn +2944.8P + 1.056Cr - 81.1Ni + 95.8Mo - 125.1Ti - 1584.9Al - 376.1N = 600 (1) 30C + 0.5Mn + Ni + 0.5Cu - 1.5Si - Cr - Mo + 7.9 = 0 (2) The above martensitic stainless steel can achieve a yield stress of 758 to 860 MPa with a range of tempering temperature being broader than that in the case of a conventional martensitic stainless steel.