Tihanna Vorster (born 28 March 1985) is a retired South African sprinter who specialized in the 400 metres.

She competed in the 4 × 400 metres relay at the 2004 World Junior Championships, but the team was disqualified.

The South African team fared better at the 2007 All-Africa Games where Vorster helped win the silver medal.

Her personal best time was 54.12 seconds, achieved in April 2003 in Durban.

[1] This biographical article relating to South African athletics is a stub.