Louis Meintjes (born 21 February 1992) is a retired South African cyclist, who last rode for UCI WorldTeam Intermarché–Wanty. He won the South African National Road Race Championships in 2014, and has finished 8th overall in the Tour de France, on 3 occasions in 2016, 2017 and 2022. He has also finished 10th overall at the 2015 Vuelta a España, and won a stage at the 2022 Vuelta a España.

He is widely known for his unorthodox climbing style, as he often took the last place of the peloton, overtaking riders as they dropped on the climb, often remaining with the leaders' group until late in the stages. This has earned him the nickname "El Revisor" (The Ticket Inspector) amongst spanish commentators, as he conducts his roll call in the hardest climbs.