A daughter of South Africa's former President Jacob Zuma has been sworn into parliament, less than a fortnight after her half-sister was forced to step down.

Brumelda Zuma became one of South Africa's newest MPs on Wednesday, representing uMkhonto weSizwe (MK), the opposition party led by her father.

Her half-sister, Duduzile Zuma-Sambudla, resigned from parliament following allegations that she had tricked 17 men into fighting for Russia as mercenaries in Ukraine. Zuma-Sambudla has denied these accusations.

Brumelda Zuma's appointment suggests the former president intends to ensure his family is represented in parliament.

She was sworn in alongside three other MK members, who, the party said, "bring a wealth of experience and dedication" to parliament.