Willy Otto Jordan (15 September 1920 – 7 October 2019) was a Brazilian swimmer. Born in São Paulo, he took up swimming in 1932 at the age of 12 and, by the end of the decade, was one of the most prominent names in the city's blooming swimming movement. In 1940 he broke the South American records in the 200-metre freestyle and the 100-metre breaststroke as well as the Brazilian record in the 100-metre freestyle while competing against touring swimmers from Japan, including Olympic medalists Masanori Yusa and Tetsuo Hamuro. Later that year he was national champion in the breaststroke and relay events, as well as the 100m freestyle, for the first time.