Armand "Mondo" Duplantis (born November 10, 1999) is a Swedish-American pole vaulter. Duplantis won gold as a 15 year old in the boys' pole vault at the 2015 World Youth Championships and holds a number of age group world bests. He won the gold medal at the 2018 European Championships with a height of 6.05 metres, a new under-20s world record.
Duplantis was born into an athletic family; his American father, Greg Duplantis, is a former pole vaulter with a personal best of 5.80 m (19 ft ⁄4 in), while his Swedish mother Helena (née Hedlund) is a former heptathlete and volleyball player. His two older brothers, Andreas and Antoine, also took up sports; Andreas represented Sweden as a pole vaulter at the 2009 World Youth Championships and 2012 World Junior Championships, while Antoine dropped pole vault for baseball in high school.
Armand Duplantis first tried pole vaulting as a four-year-old at the family's home in Lafayette, Louisiana, and took to the event rapidly; he set his first age group world best at age 7, and his jump of 3.86 m (12 ft 8 in) as a ten-year-old surpassed the previous world bests for ages 11 and 12 as well. As of July 2015, he holds the world best in all age groups from age 7 to age 12; he held the age 13 record until it was broken in May 2015.