Marlon Acácio, previously known as Marlon August, (born July 9, 1982) is a judoka. Competing for South Africa in the 73 kg division he won a bronze medal at the 2008 African Championships and reached quarterfinals at the 2008 Olympics. At the 2016 Summer Olympics he competed for Mozambique in the 81 kg division, and was eliminated in the first bout.