Tuoba tiosianus is a species of centipede in the Geophilidae family, described in 1934 by Japanese myriapodologist Yosioki Takakuwa.
The original description of this species is based on a female specimen measuring 20 mm in length with 53 pairs of legs.
The species occurs in Micronesia. The type locality is Tiba, Kapingamarangi, Pohnpei.