| Jean Yves de Blasiis | |
| Height: | 1.75 m |
| Birth Date: | 25 September 1973 |
| Birth Place: | Bordeaux, France |
| Position: | Midfielder |
| Years1: | 1995–1996 |
| Clubs1: | Bordeaux |
| Caps1: | 19 |
| Goals1: | 0 |
| Years2: | 1996–1997 |
| Clubs2: | Caen |
| Caps2: | 14 |
| Goals2: | 0 |
| Years3: | 1997–1999 |
| Clubs3: | Red Star |
| Years4: | 1999–2001 |
| Clubs4: | Norwich City |
| Caps4: | 38 |
| Goals4: | 0 |
| Years5: | 2001–2001 |
| Clubs5: | Istres |
| Caps5: | 18 |
| Goals5: | 0 |
Jean Yves de Blasiis (born 25 September 1973 in Bordeaux) is a French former professional footballer.
De Blasiis, a midfielder, began his career with his hometown club FC Girondins de Bordeaux where he won the 1995 UEFA Intertoto Cup.[1] He then moved to Stade Malherbe Caen and then Red Star Paris. In the summer of 1999, Norwich City manager Bruce Rioch signed him on a Bosman free transfer. After a promising start, his spell at Norwich was wrecked by a cruciate ligament injury and the club released him the summer of 2001. He returned to France where he played for his former club Bordeaux and FC Istres.
He is now part of the coaching staff at Bordeaux.