A wire harness includes: an electrical wire group including a main electrical wire section, a first branch electrical wire section, and a second branch electrical wire section; a small-diameter tubular exterior member configured to cover the main electrical wire section in the circumferential direction, and on whose base end section side the first branch electrical wire section is located; a large-diameter tubular exterior member configured to cover the main electrical wire section in the circumferential direction, and on whose base end section side the second branch electrical wire section is located; first and second tape-fixing sections; and twist indicator that is provided at a position at which the small-diameter tubular exterior member and the large-diameter tubular exterior member overlap each other, and is configured to indicate the degree of twist of the main electrical wire section between the first branch electrical wire section and the second branch electrical wire section.