| Nationality: | Italian |
| Sport: | Athletics |
| Event: | Javelin throw |
| Club: | SAI Fondiaria |
| Birth Date: | 1972 4, df=y |
| Birth Place: | Trieste. Italy |
| Weight: | 74kg (163lb) |
| Pb: |
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| Country: |  Italy |
Claudia Coslovich (born 26 April 1972 in Trieste) is a former Italian athlete who specialized in the javelin throw.
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.[1] Coslovich is now coach of the Italian National Team for the event of javelin throw, and she is the Italian record holder.
| 1994 | European Championships | Helsinki, Finland | 19th (q) | 53.10 m | |
| 1997 | Mediterranean Games | Bari, Italy | bgcolor=silver | 2nd | 57.16 m |
| 1998 | Budapest, Hungary | 7th | |||
| 2000 | Olympic Games | Sydney, Australia | 12th | 56.74 m | |
| 2001 | World Championships | Edmonton, Canada | 11th | 57.27 m | |
| Mediterranean Games | Radès, Tunisia | bgcolor=gold | 1st | 62.02 m | |
| 2003 | World Championships | Paris, France | 7th | 59.64 m | |
| World Athletics Final | Monte Carlo, Monaco | 7th | 58.61 m | ||
| 2004 | Olympic Games | Athens, Greece | 14th | 60.58 m | |
| 2005 | World Championships | Helsinki, Finland | 19th | 55.78 m | |
| 2006 | Gothenburg, Sweden | 23rd |
She has won twenty individual national championship titles, an Italian all-time record for a woman.[2]