A high-strength steel sheet that has a component composition comprising, on a mass percent basis: C: 0.07% to 0.25%, Si: 0.01% to 1.80%, Mn: 1.8% to 3.2%, P: 0.05% or less, S: 0.02% or less, Al: 0.01% to 2.0%, and N: 0.01% or less; at least one of B: 0.0001% to 0.005%, Ti: 0.005% to 0.04%, and Nb: 0.005% to 0.06%; optionally at least one of Mo: 0.03% to 0.50% and Cr: 0.1% to 1.0% in a total of 1% or less; optionally a total of 0.5% or less of at least one of Cu, Ni, Sn, As, Sb, Ca, Mg, Pb, Co, Ta, W, REM, Zn, V, Sr, Cs, and Hf; and a balance being Fe and incidental impurities, that has a steel microstructure in which, in a thickness cross-section in a rolling direction, an area percentage of ferrite ranges from 5% to 30%, a total area percentage of tempered martensite and bainite ranges from 40% to 90%, pearlite constitutes 0% to 5%, a total area percentage of fresh martensite and retained γ ranges from 5% to 30%, a ratio of a total area percentage of the fresh martensite and the retained y to a total area percentage of the tempered martensite, bainite, and pearlite is 0.5 or less, and a ratio of the fresh martensite and the retained y adjacent to the ferrite with respect to the fresh martensite and the retained y is 30% or more in total area percentage, and that has a yield strength of 550 MPa or more, wherein the yield strength, the area percentage of ferrite, the total area percentage of tempered martensite and bainite, the percentage of pearlite, the total area percentage of fresh martensite and retained γ, the ratio of a total area percentage of the fresh martensite and the retained y to a total area percentage of the tempered martensite, bainite, and pearlite and the ratio of the fresh martensite and the retained y adjacent to the ferrite with respect to the fresh martensite and the retained γ, in total area percentage, are determined in accordance with the specifics given in the description. C: 0.07% to 0.25%, Si: 0.01% to 1.80%, Mn: 1.8% to 3.2%, P: 0.05% or less, S: 0.02% or less, Al: 0.01% to 2.0%, and N: 0.01% or less; at least one of B: 0.0001% to 0.005%, Ti: 0.005% to 0.04%, and Nb: 0.005% to 0.06%; optionally at least one of Mo: 0.03% to 0.50% and Cr: 0.1% to 1.0% in a total of 1% or less; optionally a total of 0.5% or less of at least one of Cu, Ni, Sn, As, Sb, Ca, Mg, Pb, Co, Ta, W, REM, Zn, V, Sr, Cs, and Hf; and a balance being Fe and incidental impurities, that has a steel microstructure in which, in a thickness cross-section in a rolling direction, an area percentage of ferrite ranges from 5% to 30%, a total area percentage of tempered martensite and bainite ranges from 40% to 90%, pearlite constitutes 0% to 5%, a total area percentage of fresh martensite and retained γ ranges from 5% to 30%, a ratio of a total area percentage of the fresh martensite and the retained y to a total area percentage of the tempered martensite, bainite, and pearlite is 0.5 or less, and a ratio of the fresh martensite and the retained y adjacent to the ferrite with respect to the fresh martensite and the retained y is 30% or more in total area percentage, and that has a yield strength of 550 MPa or more, wherein the yield strength, the area percentage of ferrite, the total area percentage of tempered martensite and bainite, the percentage of pearlite, the total area percentage of fresh martensite and retained γ, the ratio of a total area percentage of the fresh martensite and the retained y to a total area percentage of the tempered martensite, bainite, and pearlite and the ratio of the fresh martensite and the retained y adjacent to the ferrite with respect to the fresh martensite and the retained γ, in total area percentage, are determined in accordance with the specifics given in the description.