where is sinner from

Jannik Sinner is from Italy. He was born in the town of San Candido (Innichen) in the South Tyrol region of northern Italy, an area with both Italian and German cultural influences.
He is Italian by nationality, even though his German-sounding surname and red hair often make people assume he might be from Austria or Ireland.
Information gathered from public forums or data available on the internet and portrayed here.