A ferritic stainless steel having good corrosion resistance and good brazability in the case where brazing is performed with a Ni-containing brazing filler metal at a high temperature. The ferritic stainless steel has a chemical composition comprising, by mass %, C: 0.003% to 0.020%, Si: 0.05% to 0.60%, Mn: 0.05% to 0.30%, P: 0.040% or less, S: 0.020% or less, Cr: 17.0% to 22.0%, Ni: 0.20% to 0.80%, Cu: 0.30% to 0.80%, Mo: 0.01% to 0.10%, Al: 0.001% to 0.015%, Nb: 0.25% to 0.60%, N: 0.020% or less, and the balance being Fe and inevitable impurities. The expression 4Ni−(Si+Mn)≥0.00% is satisfied, where each of Ni, Si, and Mn denotes a content, by mass %, of a corresponding element.