Helene "Leni" Thurner (born August 12, 1938) is an Austrian luger who competed during the 1960s. She won the bronze medal in the women's singles event at the 1964 Winter Olympics in Innsbruck.
She was born in Zams.
Thurner also won three medals in the women's singles event at the FIL World Luge Championships with a silver (1963) and two bronzes (1961, 1967).
She also won a silver medal in the women's singles at the 1962 FIL European Luge Championships in Weissenbach, Austria.