A flux-cored wire for gas-shielded arc welding, which has a steel outer sheath filled with a flux, the flux-cored wire comprising, relative to a total mass of the wire: C: 0.01 mass% or more and 0.20 mass% or less; Mn: 0.5 mass% or more and 5.0 mass% or less; TiO 2 : 2.0 mass% or more and 10.0 mass% or less; and Ni: 0.10 mass% or more and 5.00 mass% or less, wherein: P: 0.050 mass% or less, S: 0.050 mass% or less, the flux-cored wire optionally comprising: at least one of Si and an Si oxide: 0.05 mass% or more and 1.00 mass% or less in total in terms of Si; at least one of Cr: 0.50 mass% or less, Cu: 0.50 mass% or less, and Mo: 0.50 mass% or less; metal Mg and an Mg alloy: 0.10 mass% or more and 1.20 mass% or less in total in terms of Mg; metal Ti and a Ti alloy: 0.80 mass% or less in total in terms of Ti; B and a B compound: 0.0010 mass% or more and 0.0200 mass% or less in total in terms of B; an F compound: 0.01 mass% or more and 0.50 mass% or less in total in terms of F, and a sum of a total in terms of Na of an Na compound and a total in terms of K of a K compound: 0.01 mass% or more and 1.00 mass% or less; at least one of Nb: 0.10 mass% or less and V: 0.10 mass% or less; ZrO 2 : 0.50 mass% or less and Al 2 O 3 : 0.05 mass% or more and 1.00 mass% or less, wherein the remainder is Fe and unavoidable impurities, and with respect to the TiO 2 , a value of a ratio α1/α2 is 0.90 or more and 1.50 or less, wherein α1, in mass %, is a content of a particle having a particle size of 106 μm or less relative to the total mass of the wire, and α2, in mass%, is a content of a particle having a particle size of more than 106 μm relative to the total mass of the wire, wherein the particle size of TiO 2 is determined in accordance with the measurement method described in the description under the heading Method for measuring particle size of TiO 2 . C: 0.01 mass% or more and 0.20 mass% or less; Mn: 0.5 mass% or more and 5.0 mass% or less; TiO 2 : 2.0 mass% or more and 10.0 mass% or less; and Ni: 0.10 mass% or more and 5.00 mass% or less, P: 0.050 mass% or less, S: 0.050 mass% or less, at least one of Si and an Si oxide: 0.05 mass% or more and 1.00 mass% or less in total in terms of Si; at least one of Cr: 0.50 mass% or less, Cu: 0.50 mass% or less, and Mo: 0.50 mass% or less; metal Mg and an Mg alloy: 0.10 mass% or more and 1.20 mass% or less in total in terms of Mg; metal Ti and a Ti alloy: 0.80 mass% or less in total in terms of Ti; B and a B compound: 0.0010 mass% or more and 0.0200 mass% or less in total in terms of B; an F compound: 0.01 mass% or more and 0.50 mass% or less in total in terms of F, and a sum of a total in terms of Na of an Na compound and a total in terms of K of a K compound: 0.01 mass% or more and 1.00 mass% or less; at least one of Nb: 0.10 mass% or less and V: 0.10 mass% or less; ZrO 2 : 0.50 mass% or less and Al 2 O 3 : 0.05 mass% or more and 1.00 mass% or less, wherein the remainder is Fe and unavoidable impurities, and with respect to the TiO 2 , a value of a ratio α1/α2 is 0.90 or more and 1.50 or less, wherein α1, in mass %, is a content of a particle having a particle size of 106 μm or less relative to the total mass of the wire, and α2, in mass%, is a content of a particle having a particle size of more than 106 μm relative to the total mass of the wire, wherein the particle size of TiO 2 is determined in accordance with the measurement method described in the description under the heading Method for measuring particle size of TiO 2 . <EOS>