|Date of birth||13 May 1980|
|Place of birth||Bloemfontein, South Africa|
|Rugby union career|
Peyper rose through the ranks in South Africa quickly, making his Super Rugby debut in 2008 while still in his 20s. In 2011 he was named as an official for the 2011 IRB Junior World Championship in Italy. This included the final between England and New Zealand where New Zealand won 33-22.
In 2012, Peyper was promoted to the International Rugby Board's elite panel and was tasked with refereeing Scotland's 2012 tour of Oceania. This included Scotland's 6-9 away win over Australia, 25-37 away win over Fiji and 16-17 away win over Samoa. He was also referee for Argentina v New Zealand clash in Round 5 of the 2012 Rugby Championship.
On 20 October 2019, Peyper was the referee for the 2019 Rugby World Cup quarter-final between Wales and France and sent off France's Sébastien Vahaamahina for an elbow. After the match a photograph emerged on social media showing him posing with Wales fans with his elbow on to the head of one of the fans and he was not considered for a World Cup semi-final the week after.
- "Match officials announced for Rugby World Cup 2015". worldrugby.com. World Rugby. 7 April 2015. Retrieved 4 October 2015.
- worldrugby.org. "Match officials selected for RWC 2019: introducing Team 21". www.world.rugby. Retrieved 2019-05-09.
- "Referee Jaco Peyper snubbed for Rugby World Cup semi-final after photo row". Guardian. 22 October 2019. Retrieved 23 October 2019.
- "Jaco Peyper: World Rugby omits fan-picture referee from semi-finals". BBC Sport. 22 October 2019. Retrieved 23 October 2019.