Sjerstin de Vries-Vermeulen (née Vermeulen, born 1972/73)[1] is a Dutch former swimmer and equestrian, who competed at four Paralympic Games.

She came seventh and eighth in the individual events, and won a silver medal in the team event,[3] alongside Gert Bolmer, Joop Stokkel and Ineke de Groot.

[6] Vermuelen initially failed to qualify for the 2008 Summer Paralympics dressage events on her horse Kenzo.

[3] Her seventh place in the freestyle event made her the highest Dutch finisher in the competition.

[8] In 2017, Vermeulen supervised a 12-hour trampolining session in Ermelo, to raise money for a 15-year-old club member.