Carissa tetramera, the sand num-num, is a plant in the dogbane family Apocynaceae. The specific epithet tetramera means 'four parts', referring to the flower.
Carissa tetramera grows as a shrub up to 3m (10feet) tall. Its strong-scented flowers feature a white corolla, often tinged pink. The fruit is red to purple-black when ripe.
Carissa tetramera is native to Kenya, Tanzania, Zimbabwe, Mozambique, Eswatini and South Africa (KwaZulu-Natal and Northern Provinces). Its habitat is dry open woodland.