Trollius is a genus of flowering plants in the family Ranunculaceae, native to temperate regions of the Northern Hemisphere. The genus includes several species of perennials that are commonly cultivated as ornamental plants for their attractive flowers and foliage.

Trollius plants typically have large, globular flowers in shades of yellow or orange. The flowers are produced on tall, slender stems and can reach sizes of up to 8 cm (3 inches) in diameter. The leaves of Trollius are usually lobed or divided and have a green color, often with a distinctive texture.