Jaco Peyper is a former [1] South African Rugby Union referee.

Peyper rose through the ranks in South Africa quickly, making his Super Rugby debut in 2008 while still in his 20s.

In 2012, Peyper was promoted to the International Rugby Board's elite panel and was tasked with refereeing Scotland's 2012 tour of Oceania.

[2] In 2015, Peyper was selected as one of the twelve referees for the 2015 Rugby World Cup.

[5][6] Peyper was selected to referee the drawcard opening match of the 2023 RWC held on 9 September 2023, between the host nation France and New Zealand.