Metarungia is a small Afrotropical genus in the family Acanthaceae of dicotyledonous flowering plants.

Metarungia longistrobus commonly known as Sunbird Bush in English and Sonbekkiebos in Afrikaans is an unusual, attractive evergreen shrub for the shade garden, with long orange-brown flowers in candle-shaped inflorescences in late summer. The flowers are orange-brown to yellow and are produced twice a year: mainly in late summer to autumn (January to March) but also in winter to spring (July to September). The flowers emerge from between large, closely overlapping, green bracts, which give the inflorescence a cone-like appearance. The Sunbird Bush makes an unusual and beautiful garden shrub that can be planted as a specimen shrub in the shade garden, or as part of an informal hedge, or in containers, and it attracts sunbirds, bees and butterflies to the garden.