Communication cable and wire harness

A communication cable comprising:

• an insulated wire comprising a conductor and a covering layer covering the conductor, the covering layer being made of an insulator;
• and
• a sheath covering an outer circumferential surface of the insulated wire, the sheath including a resin composition containing a polyolefin and a thermoplastic elastomer,
• wherein a tensile modulus of elasticity of the sheath is 500 MPa or less,
• a mass increase rate of the sheath is less than 50% by mass when the sheath is immersed in a diisononyl phthalate at 100° C. for 72 hours,
• the thermoplastic elastomer includes a thermoplastic vulcanizate, and
• a content rate of the thermoplastic vulcanizate to the total of the polyolefin and the thermoplastic elastomer is 35% by mass or more and 50% by mass or less, and a shore A hardness of the thermoplastic vulcanizate is 31 or more and 42 or less.