Jacobus Petrus "Os" du Randt (born 8 September 1972) is a former South African rugby union loosehead prop who retired as the most-capped forward in the history of the Springboks (a record since surpassed by John Smit, Victor Matfield, Tendai Mtawarira, and most recently Eben Etzebeth, the current record holder).

[1] He ended his career as one of the last remaining international-level players from the amateur era of the sport and the last active member of the 1995 World Cup-winning squad.

Os (his Afrikaans nickname, which means Ox and refers to his big, muscular build) was a powerful scrummager and a hard worker around the field.

Du Randt continued to be a key member of the Boks in the following years, and was named by Rugby World magazine as the second-best loosehead of all time in 1999.

[citation needed] In 2003, Du Randt received a phone call from former Springboks flanker and teammate Rassie Erasmus, who was coaching the Free State Cheetahs provincial team.

He proved to be a key player in the Boks' 2004 revival, which saw them win the Tri Nations and be named as the IRB World Team of the Year.

The favoured Springboks dethroned England 15–6 in a hard-fought final, with Os playing all 80 minutes which included one bullocking run in the first half.

"[4] When questioned about his teammate, fellow Springbok prop CJ van der Linde said "Os is a legend in South African rugby.