Gerrie Pienaar is a South African cricket official born in Johannesburg on 28 April 1959. His time in the middle covers various levels of the sport within his home country. During the 2016-17 season, he took charge of fixtures in both the Sunfoil 3-Day Cup and the CSA Provincial One-Day Challenge.
On the international stage, Pienaar has officiated in seven ODI matches and seven WODI matches. Those women's international appearances occurred between 2004 and 2005. His experience spans different formats and competitive environments, showing a consistent involvement in the game over several years.
Beyond his work as an umpire, Pienaar has contributed to the tournament structure of the sport. In October 2019, he received an appointment as one of three match referees for the ICC T20 World Cup Qualifier.