An object of the present invention is to provide a guidewire in which the movement of coils of strand is not inhibited by a hydrophilic coating agent, and flexibility of a coiled body is secured even in a case where its coiled body is coated with the hydrophilic coating agent. The guidewire includes a core shaft, a coiled body including coils of strand wound around an outer circumference of the core shaft, and a hydrophilic coating agent coating at least a part of the coiled body. At least the part of the coiled body is coated with the hydrophilic coating agent so that a gap may be formed between the coils of strand.