Arechi may refer to:
Archi, Iran, a village in Karipey Rural District, Lalehabad District, Babol County, Mazandaran Province, Iran Arechis I of Benevento (died 641), duke of Benevento Arechis II of Benevento (died 787), duke of Benevento Stadio Arechi, a multi-purpose stadium in Salerno, Italy, named after Arechis II of Benevento Arechi, a Japanese literary journal; see Ryūichi Tamura