| Lorenzo Valentini | |
| Nationality: | Italian |
| Sport: | Athletics |
| Event: | Sprint |
| Club: | G.S. Fiamme Gialle |
| Birth Date: | 1991 4, df=yes |
| Birth Place: | Rieti, Italy |
| Country: |  Italy |
| Coach: | Maria Chiara Milardi |
| Weight: | 79kg (174lb) |
| Pb: |
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Lorenzo Valentini (born 13 April 1991) is an Italian sprinter, specialized in the 400 metres.
Lorenzo Valentini won a medal at the 2013 Mediterranean Games.[1]
| 2009 | European Junior Championships |  Novi Sad | 200 metres | 21.99 | |
| 2010 | World Junior Championships |  Moncton | 26th (h) | 200m | 21.60 (wind: +0.9 m/s) |
| 14th (h) | 4×400m relay | 3:12.32 | |||
| 2011 | World Indoor Championships |  Istanbul | 400 metres | 48.47 | |
| 2012 | European Championships |  Helsinki | 400 metres | 46.64 | |
| 4×400 m relay | 3:08.87 | ||||
| 2013 | European Indoor Championships |  Gothenburg | 400 metres | 47.3 | |
| Mediterranean Games | Mersin | bgcolor=gold | 1st | 4×400 m relay | 3.04.61 |
| European U23 Championships | Tampere | 12th (h) | 400m | 47.03 | |
| 3rd | 4x400m relay | 3:05.10 |
He has won 2 times the individual national championship.[1]