Provided is a hot-rolled steel sheet in which: the composition of the steel sheet comprises, in mass%, 0.01-0.2% of C, 2.5% or less of Si, 4.0% or less of Mn, 0.10% or less of P, 0.03% or less of S, 0.001-2.0% of Al, 0.01% or less of N, 0.01% or less of O, 0.01-0.30% of Ti, and a remainder of iron and impurities; and tempered martensite having an average aspect ratio of 2 or less or a combination of tempered martensite and lower bainite constitutes 90% or more of the total volume fraction of the structure of the steel sheet.