Ans Dekker

Anna Maria "Ans" Dekker (born 1 March 1955) is a former artistic gymnast from the Netherlands who competed at the 1972 and 1976 Summer Olympics in all artistic gymnastics events. Her best achievement was 9th place in the team all-around in 1972.

She is wife of Sjaak Pieters, aunt of Amy Pieters and sister-in-law of Peter Pieters, all of whom are Olympic cyclists.