A ferritic stainless steel that a composition including in terms of % by mass, C: 0.015% or less, Si: 1.0% or less, Mn: 1.0% or less, P: 0.040% or less, S: 0.010% or less, Cr: 10.0% to 23.0%, Al: 0.2% to 1.0%, N: 0.015% or less, Cu: 1.0% to 2.0%, Nb: 0.30% to 0.65%, Ti: 0.50% or less, O: 0.0030% or less, and the balance being Fe and unavoidable impurities, wherein a Si content and an Al content satisfy Si≥Al, and the Al content and an O content satisfy Al/O≥100.