Mateus de Carvalho Cardoso Alves (born 23 January 2001) is a Brazilian tennis player. Alves has a career high ATP singles ranking of 1628 achieved on 19 November 2018. He also has a career high ATP doubles ranking of 1278 achieved on 17 December 2018. Alves made his ATP main draw debut at the 2019 Rio Open in the doubles draw partnering Thiago Seyboth Wild.