María Teresa Portela Rivas (born 5 May 1982) is a Spanish sprint canoer who has competed since the early 2000s. Portela competed in six Summer Olympics, earning a silver medal on her sixth games at the 2020 Summer Olympics in Women's K-1 200 m. Previously she finished fourth on one occasion (2012 Summer Olympics: Women's K-1 200 m) and fifth on three occasions (2004: K-2 500 m, K-4 500 m; 2008: K-4 500 m).