Tīna Graudiṇa is a beach volleyball player who has competed for Latvia.
She competed at the 2020 and 2024 Summer Olympic Games. She and her partner Anastasija Samoilova became the first Latvian pair to play in the women's beach volleyball tournament at the Olympic Games in 2020. She was also selected to carry the Latvian flag during the Paris 2024 opening ceremony with Nauris Miezis.