Sandrine Billiet (born 16 February 1990 in Bruges) is a Belgian-Cape Verdean judoka who competes in the women's 63 kg class.
Billiet competed for Belgium at the 2014 European Judo Championships and 2017 Judo Grand Prix.
Since 2019, Billiet has represented Cape Verde. She participated at 2019 World Judo Championships,
At the 2021 African Judo Championships held in Dakar, Senegal, she won the silver medal in the women's 63 kg event. She competed at the 2020 Summer Olympics held in Tokyo, Japan.