Adromischus marianiae is a species of succulent plant in the genus Adromischus belonging to the family Crassulaceae.
Adromischus marianiae ranges in height from . This perennial succulent and slow-growing subshrub has usually thin and short branches and forms a small cluster of rough, warty and nearly spherical leaves resembling dried raisins, quite variable in colour but usually green or red-brown or purplish, up to 3.5 cm long. Flowers are green with a pinkish nuance, about 12 mm long.
A. marianiae requires bright light and should not be overwatered. It typically struggles at temperatures below 5 ðC.
This plant is native to South Africa and Namibia.
Adromischus marianiae grows on granite hills, sometimes inside the cracks of the rocks and in the shade of bushes.