Natascia Leonardi Cortesi (born 1 May 1971) is a Swiss cross-country skier and ski mountaineer who has competed since 1988 in the World Cup circuit.

Leonardi Cortesi's best score at the FIS Nordic World Ski Championships was a fifth place in the 4 × 5 km relay in 1999.

In Ski mountaineering she won 2005 the Trofeo Mezzalama with Gloriana Pellisier and Christiane Nex.

She was the first Swiss woman to win the Kangaroo Hoppet 2006 in Australia and 2011 the Transjurassienne in France.

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