Portugal competed at the 2011 World Championships in Athletics from August 27 to September 4 in Daegu, South Korea. The Portuguese Athletics Federation announced a squad of 25 athletes (12 men and 13 women).^[1]

Among the medal hopefuls are Nelson Évora (reigning Olympic champion in men's triple jump), Rui Silva (1500-metre bronze medalist at the 2004 Olympic Games and 2005 World Championships), Jéssica Augusto (2010 European cross-country champion and 10,000-metre bronze medalist at the 2010 European Championships), Sara Moreira (5000-metre bronze medalist at the 2010 European Championships), and Susana Feitor (20-km walk bronze medalist at the 2005 World Championships), who will compete for an all-time record 11th consecutive time at these Championships.