Claudia Coslovich (born 26 April 1972 in Trieste) is a former Italian athlete who specialized in the javelin throw.

[1] Her personal best was 65.30 metres, achieved in June 2000 in Ljubljana.

She is a member of the Slovene ethnic minority of Friuli - Venezia Giulia.

She is engaged to the hammer thrower Nicola Vizzoni.

She has won twenty individual national championship titles, an Italian all-time record for a woman.