Natalia Duco Soler (born 31 January 1989 in San Felipe, Valparaíso) is a Chilean shot putter.Duco finished fourth at the 2005 World Youth Championships, twelfth at the 2006 World Junior Championships and won the gold medal at the 2008 World Junior Championships.
She also competed at the 2008 Olympic Games without reaching the final round.
Duco's personal best throw (and Chilean national record) is 18.80 metres, achieved in August 2012 at the London Olympics, where she qualified for the final, finishing ninth.
She also reached the final of the 2016 Olympic Games.