| Gianpaolo Castorina | |
| Birth Date: | 30 August 1976 |
| Birth Place: | Milan, Italy |
| Height: | 1.77 m |
| Currentclub: | PAOK (Assistant) |
| Position: | Defender |
| Youthyears1: | 1992 |
| Youthyears2: | 1994 |
| Youthclubs1: | Como |
| Youthclubs2: | Milan |
| Years1: | 1995–1996 |
| Years2: | 1996–1997 |
| Years3: | 1997–2002 |
| Years4: | 2000 |
| Years5: | 2002–2003 |
| Years6: | 2003–2004 |
| Years7: | 2004–2005 |
| Years8: | 2005 |
| Years9: | 2006 |
| Years10: | 2006–2007 |
| Years11: | 2007–2010 |
| Clubs1: | Lodigiani |
| Clubs2: | Ancona |
| Clubs3: | Monza |
| Clubs4: | Siena |
| Clubs5: | Arezzo |
| Clubs6: | Carrarese |
| Clubs7: | Ancona |
| Clubs8: | Südtirol |
| Clubs9: | Nocerina |
| Clubs10: | Forte dei Marmi |
| Clubs11: | Virtus Entella |
| Caps1: | 19 |
| Caps2: | 32 |
| Caps3: | 120 |
| Caps4: | 10 |
| Caps5: | 24 |
| Caps6: | 25 |
| Caps7: | 31 |
| Caps8: | 3 |
| Caps9: | 6 |
| Caps10: | 30 |
| Goals1: | 1 |
| Goals2: | 0 |
| Goals3: | 0 |
| Goals4: | 0 |
| Goals5: | 0 |
| Goals6: | 0 |
| Goals7: | 0 |
| Goals8: | 0 |
| Goals9: | 0 |
| Goals10: | 0 |
| Nationalyears1: | 1992 |
| Nationalyears2: | 1992 |
| Nationalyears3: | 1994 |
| Nationalteam1: | Italy U-15 |
| Nationalteam2: | Italy U-16 |
| Nationalteam3: | Italy U-18 |
| Nationalcaps1: | 6 |
| Nationalcaps2: | 6 |
| Nationalcaps3: | 1 |
| Nationalgoals1: | 0 |
| Nationalgoals2: | 0 |
| Nationalgoals3: | 0 |
| Manageryears1: | 2010–2011 |
| Managerclubs1: | Virtus Entella (Assistant) |
| Manageryears2: | 2011–2020 |
| Managerclubs2: | Virtus Entella (Youth Manager) |
| Manageryears3: | 2021–2022 |
| Managerclubs3: | PAOK (Assistant) |
| Manageryears4: | 2022–2023 |
| Managerclubs4: | Parma (Youth Manager) |
| Manageryears5: | 2023– |
| Managerclubs5: | PAOK (Assistant) |
Gianpaolo Castorina (born 30 August 1976) is a retired Italian professional footballer turned coach.
Castorina played in the Serie B for several seasons, reaching the peak of his playing career with Monza and Siena. He retired in 2010 after three years with Virtus Entella.
After his retirement, he switched into a coaching staff role at Virtus Entella, serving as first team assistantand successively as youth coach. Under his guidance, the Primavera Under-19 team managed to reach the final of the Coppa Italia Primavera 2017, then lost to Roma 3–1 on aggregate.[1]
On 30 April 2017, Castorini was promoted to the first team head coaching role until the end of the season after Roberto Breda's dismissal following three consecutive losses in the Serie B league which led Virtus Entella out of the promotion playoff zone.[2] On 31 May 2017, Virtus Entella announced Castorina will serve as permanent head coach for the 2017–18 Serie B season.[3] He was dismissed on 5 November 2017, due to poor results, and replaced by Alfredo Aglietti.
After his dismissal, he returned at Virtus Entella in 2018 as a youth coach, winning the Campionato Nazionale Dante Berretti title in 2019. He left the club in May 2020, ending a thirteen-year tenure with the Ligurian club.[4]