Caladenia patersonii is a plant in the orchid family Orchidaceae and is native to Victoria and Tasmania.

It is a ground orchid with a single hairy leaf and one or two creamy-white, yellowish or pink flowers.

One or two creamy-white, yellowish or pink flowers with dark red lines are borne on a spike 250–350 mm (9.8–14 in) tall.

[2][3][4][5] Caladenia patersonii was first formally described in 1810 by Robert Brown and the description was published in ''Prodromus florae Novae Hollandiae.

[6][7] Paterson's spider orchid is found mostly in eastern coastal Victoria and northern Tasmania where it grows in heath and heathy woodland.