Greg Prosser (born 21 May 1966) is a Welsh former international rugby union player who represented the Wales national team on one occasion during the 1995 Rugby World Cup.
He played in the top division of Welsh club rugby for Pontypridd RFC, where he spent a total of twelve seasons, and Bridgend RFC for two seasons.
Prosser was included in the Wales squad for the 1995 Rugby World Cup, and made his only appearance for the national team during the tournament, a 34-9 defeat to New Zealand.
[4] Prosser was part of the Pontypridd team that won the SWALEC Cup in 1996 and the Welsh Premier Division in the 1996-97 season.
[5] He left Pontypridd at the end of the 1999/2000 season to join Abercynon RFC.