Styliani Marentaki is Greek taekwondo practitioner. She was a gold medalist at the European Taekwondo Championships.

Career Marentaki won the gold medal in the -67 category at the 2024 European U21 Taekwondo Championships in Sarajevo, winning the tournament without dropping a round and defeating Lena Moreno of Spain in the final.

In December 2025, she was a bronze medalist at the 2025 World U21 Taekwondo Championships in Nairobi, Kenya. Later that month, she retained her title to win the gold medal in the women’s -67 kg at the 2025 European U21 Taekwondo Championships in Pristina, Kosovo.

In May 2026, she defeated Luana Marton of Hungary to win the gold medal at the 2026 European Taekwondo Championships in Germany. On her way to the final, she also defeated Olympic silver medalist Aleksandra Perisic of Serbia 2-0.

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