To provide a guide wire including excellent torque transmission property while securing handiness of reshaping and flexibility of a tip part.SOLUTION: A guide wire 100 includes: a long-sized core member 110 including in the tip part a plate-like part 111a having a pair of opposed surfaces 114, 115； a twist suppressing part 120 provided at least on one surface of the pair of surfaces of the plate-like part, and suppressing twist of the plate-like part； and a bending guide part 130 provided at least on one surface of the pair of surfaces of the plate-like part, and guiding bending of the plate-like part in a state that external force F for compressing the core member is added in a longitudinal direction X of the core member.SELECTED DRAWING: Figure 1【課題】リシェイプの簡便性および先端部の柔軟性を確保しつつ、優れたトルク伝達性を備えるガイドワイヤを提供する。【解決手段】ガイドワイヤ１００は、向かい合う一対の面１１４、１１５を備える板状部１１１ａを、先端部に備える長尺状のコア部材１１０と、板状部の一対の面の少なくとも一方の面に設けられるとともに、板状部のねじれを抑制するねじれ抑制部１２０と、板状部の一対の面の少なくとも一方の面に設けられるとともに、コア部材の長軸方向Ｘにコア部材を圧縮する外力Ｆが付加された状態において、板状部の屈曲を誘導する屈曲誘導部１３０と、を有する。【選択図】図１
