Ferritic stainless steel

A ferritic stainless steel which is characterized by having a chemical composition that contains, in mass%, from 0.001% to 0.02% of C, from 0.02% to 1.5% of Si, 1.5% or less of Mn, 0.040% or less of P, 0.006% or less of S, from 10% to 25% of Cr, from 0.01% to 0.20% of Al, 0.35% or less of Ti, 0.70% or less of Nb, from 0.0005% to 0.010% of O, from 0.005% to 0.025% of N and 0.0030% or less of Ca. This ferritic stainless steel is also characterized in that among the inclusions containing CaO and having a maximum diameter of 2 μm or more, the proportion of the number of inclusions, each of which has one or more M(C, N) sites in the outer peripheral part, while having a total area ratio of the M(C, N) sites of 40% or more, is 70% or more. Meanwhile, M(C, N) represents a carbonitride of element M; and M represents one or more elements that are selected from among Ti, Nb and Cr.