Armand Marchant (born 14 December 1997) is a Belgian alpine ski racer. Marchant specializes in the technical events of slalom and giant slalom. Marchant made his World Cup debut on 13 December 2014. He competed at the 2015 World Championships in Beaver Creek, US, in the giant slalom and the slalom.
Marchant made his World Cup debut on 13 December 2014 in the Alta Badia giant slalom, he failed to finish the first run. At the 2015 World Championships in Beaver Creek he finished 41st in the giant slalom and failed to finish the first run of the slalom. On 11 December 2016 he scored his first World Cup points finishing 18th in the Val-d'Isère slalom. A month later, on January 7, 2017, he suffered serious potentially career-ending injuries when he crashed in to a gate during the World Cup giant slalom in Adelboden, Switzerland. It took seven surgeries to repair a shattered left tibial plateau, damaged ligaments and meniscus and two years of rehabilitation to become a skier once again. 947 days after the accident, he made his return to competition during the New Zealand national championships in Coronet Peak, finishing nineteenth.
On 5 January 2020 Marchant finished the 5th place at the Zagreb World Cup slalom event.
In November 2025 Marchant recorded his first ever World Cup podium, finishing second, seven hundredths of a second behind the winner, frenchman Paco Rassat, in the slalom in Gurgl, Austria. It was his second top-five finish after coming fifth in Zagreb in 2020. It was also a first ever World Cup podium in history for Belgium in Alpine skiing. Having qualified for the 2026 Winter Olympics in Milan and Cortina d'Ampezzo, Italy, he finished fifth in the men's slalom recording the best Belgian result ever in alpine skiing at the Winter Olympics, bettering the 8th place by Belgian skier Patricia du Roy de Blicquy in the women's slalom at the 1964 Winter Olympics in Innsbruck, Austria.