Stien den Hollander (born November 8, 2000 in Hoorn, Netherlands), professionally known as S10 (pronounced 'Es-Teen') is a Dutch rapper and singer, originally from the town of Hoorn, Netherlands. She represented the Netherlands at Eurovision Song Contest 2022 in Turin, Italy with her song De Diepte and ended up 11th in the grand final.

She was only 16 years old when she was signed to Dutch hiphop label, Noah's Ark, in January 2018. Her albums Antipsychotica (2017) and Lithium (2018) were named after medication typically prescribed for psychosis and manic depression.

Snowsniper (2019) was regarded by many as S10's proper full-length début album. Its successors were Vlinders (2020) and Ik besta voor altijd zolang jij aan mij denkt (2022).

S10 has been praised for her painfully honest lyrics about her mental health issues.