Andixius trifurcus is a species of planthopper belonging to the family Cixiidae.

It is endemic to Yunnan, China.

Both sexes have yellow-brown bodies and dark brown to black antennae.

Their eyes are brown, translucent, and have a yellow ocelli.

Unlike the similar-looking Andixius longispinus, they have larger brown markings on the wings and lack a tan spot.