A wind turbine blade comprising: a blade body having a chord length that decreases from a blade root side to a blade tip side, the blade body includes a blade-tip region in which a dimensionless radial position is within the range of 0.6 to 1.0, inclusive, the dimensionless radial position being the ratio of radial position to blade radius that is 1/2 of a blade diameter, and a blade-body region in which the dimensionless radial position is smaller than 0.6, and in that a maximum-blade-thickness position of a blade cross-section in the blade-tip region is closer to a leading edge than a maximum-blade-thickness position of a blade cross-section in the blade-body region when the chord length at the leading edge is defined as 0 percent, and the chrod length of a trailing edge is defined as 100 percent, in each of the blade cross-sections, the wind turbine blade being characterized in that the leading edge in the blade-tip region is shifted in the direction of the trailing edge such that a maximum-blade-thickness line formed by connecting, in the radial direction, the maximum-blade-thickness positions of the blade cross-sections at radial positions form a substantially straight line, and wherein the leading edge in the blade-tip region is S-shaped such that the leading edge shifts greatly toward the trailing edge in a transition region from the blade-body region to the blade-tip region, shifts gradually in the direction of the trailing edge toward the blade tip in a connecting region, which is connected to the transition region, an shifts in the direction of the trailing edge to finally connect with the blade tip in an end region, which is connected to the connecting region. a blade body having a chord length that decreases from a blade root side to a blade tip side, the blade body includes a blade-tip region in which a dimensionless radial position is within the range of 0.6 to 1.0, inclusive, the dimensionless radial position being the ratio of radial position to blade radius that is 1/2 of a blade diameter, and a blade-body region in which the dimensionless radial position is smaller than 0.6, and in that a maximum-blade-thickness position of a blade cross-section in the blade-tip region is closer to a leading edge than a maximum-blade-thickness position of a blade cross-section in the blade-body region when the chord length at the leading edge is defined as 0 percent, and the chrod length of a trailing edge is defined as 100 percent, in each of the blade cross-sections, the wind turbine blade being characterized in that the leading edge in the blade-tip region is shifted in the direction of the trailing edge such that a maximum-blade-thickness line formed by connecting, in the radial direction, the maximum-blade-thickness positions of the blade cross-sections at radial positions form a substantially straight line, and wherein the leading edge in the blade-tip region is S-shaped such that the leading edge shifts greatly toward the trailing edge in a transition region from the blade-body region to the blade-tip region, shifts gradually in the direction of the trailing edge toward the blade tip in a connecting region, which is connected to the transition region, an shifts in the direction of the trailing edge to finally connect with the blade tip in an end region, which is connected to the connecting region.