Cirsium toyoshimae (トヨシマアザミ, Toyoshima-azami) is an extinct species of thistle in the family Asteraceae that was endemic to the Bonin Islands of Tōkyō Metropolis, Japan.

[2][3] The species was first described by Japanese botanist Gen-ichi Koidzumi in 1919.

[2] Cirsium toyoshimae had pale purple flowers and soft spines and was somewhat smaller than the extant Cirsium boninense.

[3][4] It used to grow in wooded areas near the coast.

[4] Cirsium toyoshimae is classed as extinct on the Ministry of the Environment Red List.