| Greg Costello | |
| Fullname: | Gregory Costello |
| Birth Date: | 5 April 1970 |
| Birth Place: | Dublin, Ireland |
| Position: | Midfielder |
| Youthyears1: | 1985–1990 |
| Youthclubs1: | Queens Park Rangers F.C.Swindon Town 1990 |
| Years1: | 1991–2000 |
| Clubs1: | Shelbourne |
| Caps1: | 300+ |
| Goals1: | 30+ |
| Years2: | 2000–2001 |
| Clubs2: | Athlone Town |
| Caps2: | 19 |
| Goals2: | 1 |
| Years3: | 2000–2001 |
| Clubs3: | Kilkenny City |
| Caps3: | 12 |
| Goals3: | 0 |
| Years4: | 2001–2003 |
| Clubs4: | Shamrock Rovers |
| Caps4: | 42 |
| Goals4: | 0 |
| Nationalyears1: | 1985–1988 |
| Nationalteam1: | Republic of Ireland U18 |
| Nationalcaps1: | 21 |
| Nationalgoals1: | 0 |
| Nationalyears2: | 1996 |
| Nationalteam2: | League of Ireland XI |
| Nationalcaps2: | 1 |
| Nationalgoals2: | 0 |
Greg Costello (born 5 April 1970 in Dublin) is an Irish former footballer.
A full back Greg made his League of Ireland debut for Shelbourne at home to St Pat's on 11 January 1991. He scored the winner for Shels in the 1993 FAI Cup Final at Lansdowne Road.[1]
Costello scored in a UEFA Cup Winners' Cup win in September 1993.[2]
He joined Shamrock Rovers in 2001 where he made 2 appearances in European competition, after spells at Kilkenny City and Athlone Town.
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