Sigrid Rondelez (born 17 March 1971 in Bruges) is a Belgian windsurfer, who specialized in Mistral and classes. She represented Belgium in three editions of the Olympic Games (2000, 2004, and 2012), and was a top eight finalist at the 2003 ISAF Sailing World Championships in Cadiz, Spain. Before her sporting career ended in 2012, Rondelez trained for Side Shore Surfers Club in De Panne under her head coach, former Dutch windsurfer, and 2008 Olympian Casper Bouman.