Lize-Mari Retief (born 30 November 1986 in Bloemfontein, South Africa)[1] is an Olympic and national-record-holding swimmer from South Africa.

She swam for South Africa at the 2008 Olympics.

At the 2008 South African Nationals in April, she set 3 South African Records: 50 free, 50 fly and 100 fly.

She has swum for South Africa at the: At the 2003 All-Africa Games, she won the most individual medals of any female swimmer: 5 golds and 1 silver.

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