Qianichthyosaurus is an extinct genus of ichthyosaur from the Ladinian and Carnian stages of the Late Triassic epoch.

Its fossils have been found in southeastern China, in Carnian rocks of the Falang Formation near Huangtutang, Guizhou.

A second species, Qianichthyosaurus xingyiensis, was named from older (Ladinian) deposits in the Falang Formation in 2013 by Pengfei Yang and colleagues.

[2] Complete Qianichthyosaurus fossils are common in the Xiaowa Formation, with both juveniles and pregnant specimens being known; its larger contemporaries, Guizhouichthyosaurus and Guanlingsaurus, are rarer.

[1][2] Qianichthyosaurus is most similar to Toretocnemus from the Carnian of California, United States.