Ruellia makoyana, the monkey plant or trailing velvet plant, is a species of flowering plant in the family Acanthaceae, native to Brazil. It is an evergreen perennial growing to tall by wide, with white-veined hairy leaves and trumpet-shaped pink flowers in summer.
With a minimum temperature of , in temperate regions R. makoyana is grown indoors as a houseplant. It has gained the Royal Horticultural Society's Award of Garden Merit.