Oldenburgia is a genus of flowering plant in the family Asteraceae. It contains four accepted species, including the commonly cultivated, near-endangered species Oldenburgia grandis (Thunb.) Baill. (=Oldenburgia arbuscula DC.); the petricolous Oldenburgia paradoxa Less. (type-species); Oldenburgia intermedia Bond (small distribution around Cape Town); and Oldenburgia papionum DC. Oldenburgia herbacea (L.) Roxb., an unresolved name. They are endemic to South Africa, southern parts of western and eastern Cape.

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