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Nijel Carlos Amilfitano Amos (born 15 March 1994) is a Botswana middle-distance runner who competes in the 800 metres. He won the silver medal at the 2012 London Olympics, which was Botswana's first ever Olympic medal. Amos claimed gold medals at the 2014 Commonwealth Games and 2015 All-Africa Games. At the African Championships in Athletics, he took golds in 2014, 2016 and 2018.
He won the gold medal in his specialist event at the 2012 World Under-20 Championships. Amos is the Botswana record holder for the 800 m, his mark is also the world U20 record. He is a three-time Diamond League 800 m winner.
On 12 July 2022, Amos was provisionally suspended from competition for testing positive for metabolite GW1516. On 3 May 2023, it was announced that he had received backdated three-year doping ban which would end on 11 July 2025.