A martensitic stainless steel sheet having superior corrosion resistance, toughness at the weld zones, and workability. The composition of the steel sheet is, on a mass basis: less than about 0.02% of carbon; about 1.0% or less of silicon; less than about 1.5% of manganese; about 0.04% or less of phosphorus; about 0.01% or less of sulfur; about 0.1% or less of aluminum; about 1.5% or more and less than about 4.0% of nickel; about 11% or more and less than about 15% of chromium; about 0.5% or more and less than about 2.0% of molybdenum; and less than about 0.02% of nitrogen, the balance being iron and unavoidable impurities, wherein 15.0%.ltoreq.[Cr]+1.5.times.[Mo]+1.2.times.[Ni].ltoreq.20.0%; [C]+[N]<0.030%; [Ni]+0.5.times.([Mn]+[Mo])+30.times.[C]>3.0%; and 8.0%.ltoreq.72.times.[C]+40.times.[N]+3.times.[Si]+2.times.[Mn]+4.times.[- Ni]+[Mo].ltoreq.18.0%.