María Teresa Pórtela Rivas (born 5 May 1982) is a Spanish sprint canoer who has competed since the early 2000s.
She won 15 medals at the ICF Canoe Sprint World Championships with 2 golds (K-1 200 m: 2002, 2005), 6 silvers (K-1 200 m: 2003, K-2 200 m: 2003, 2005; K-4 200 m: 2001, 2002, 2003) and 7 bronzes (K-4 200 m: 2005, K-4 500 m: 2001, 2002, 2003, 2009, K-1 200 m: 2015, 2019).Portela also competed in three Summer Olympics, earning her best finish of fourth at the 2012 Summer Olympics in Women's K-1 200 m.
In her previous attempts she had been fifth on three occasions (2004: K-2 500 m, K-4 500 m; 2008: K-4 500 m).