This thermoplastic elastomer composition comprises: 100 parts by mass of a hydrogenated block copolymer (a) from 3 to 50 parts by mass of a polypropylene-based resin (b), from 5 to 100 parts by mass of a polyphenylene ether resin (c), and from 50 to 200 parts by mass of a non-aromatic softener (d), the hydrogenated block copolymer (a) is able to be formed by hydrogenating a block copolymer that comprises at least one polymer block A comprising a vinyl aromatic hydrocarbon compound monomer unit as a primary component and at least one polymer block B comprising a conjugated diene compound monomer unit as a primary component, and a weight average molecular weight of the hydrogenated block copolymer (a) is from 100,000 to 350,000.本發明之熱塑性彈性體組合物包含氫化嵌段共聚物(a)100質量份、聚丙烯系樹脂(b)3~50質量份、聚苯醚樹脂(c)5~100質量份、及非芳香族系軟化劑(d)50~200質量份,上述氫化嵌段共聚物(a)係將包含以至少1個乙烯基芳香族烴化合物單體單元作為主體之聚合物嵌段A、及以至少1個共軛二烯化合物單體單元作為主體之聚合物嵌段B的嵌段共聚物進行氫化而獲得之氫化嵌段共聚物,上述氫化嵌段共聚物(a)之重量平均分子量為100,000~350,000。無
