A cemented carbide includes a first hard phase, a second hard phase, and a binder phase, wherein the first hard phase is composed of tungsten carbide grains, the second hard phase is composed of carbide grains including niobium or tantalum as a constituent element, the binder phase includes cobalt, nickel, and chromium as constituent elements, at least part of the carbide grains further include tungsten as a constituent element, and when a volume ratio of the second hard phase to the cemented carbide is represented by A volume % and a volume ratio of a total of a niobium element and a tantalum element to the cemented carbide is represented by B volume %, a ratio A/B of A to B is more than 1.2.

A cemented carbide includes a first hard phase, a second hard phase, and a binder phase, wherein the first hard phase is composed of tungsten carbide grains, the second hard phase is composed of carbide grains including niobium or tantalum as a constituent element, the binder phase includes cobalt, nickel, and chromium as constituent elements, at least part of the carbide grains further include tungsten as a constituent element, and when a volume ratio of the second hard phase to the cemented carbide is represented by A volume % and a volume ratio of a total of a niobium element and a tantalum element to the cemented carbide is represented by B volume %, a ratio A/B of A to B is more than 1.2.