The guide wire includes a core shaft, a coil body wound around the core shaft, a tip joining portion where the tip of the core shaft and the tip of the coil body are joined, the base end of the core shaft, and the base of the coil body. The coil body includes a proximal end joint portion to which the ends are joined, and the coil body has a sparsely wound portion in which the coil pitch is relatively sparse between the distal end joint portion and the proximal end joint portion.ガイドワイヤは、コアシャフトと、コアシャフトに巻回されたコイル体と、コアシャフトの先端と、コイル体の先端とが接合された先端接合部と、コアシャフトの基端と、コイル体の基端とが接合された基端接合部と、を備え、コイル体は、先端接合部と基端接合部との間において、コイルピッチが相対的に疎い疎巻き部を有している。
