South Africa's highest court has ruled that husbands can take the surname of their wives, overturning a law that barred them from doing so.

In a victory for two couples who brought the case, the Constitutional Court ruled that the law amounted to gender-based discrimination.

Henry van der Merwe was denied the right to take the surname of his wife Jana Jordaan, while Andreas Nicolas Bornman could not hyphenate his surname to include Donnelly, the surname of his wife, Jess Donnelly-Bornman, reports the public broadcaster, SABC.

Parliament will now have to amend the Births and Deaths Registration Act, along with its regulations, for the ruling to take effect.

The two couples had successfully challenged the law in a lower court, but asked South Africa's highest court to confirm its ruling.