Sandra Sysojeva, born in Vilnius in 1983, is a Polish dressage rider of Lithuanian origin. She began her competitive career in Lithuania, achieving numerous international successes. In 2024, she switched nationality to represent Poland at the Paris Olympics, where she achieved the best result ever for a Polish rider: 15th place in the Grand Prix Freestyle with a score of 80.075%. With her mare Maxima Bella, she won both the Grand Prix and Freestyle at the CDI-W in Biały Las and the CDI5* in Salzburg. In 2025, she became Polish Champion and competed in the World Cup Final in Basel, finishing 7th in the Freestyle.