Billy O'Sullivan (born 22 September 1968) is an Irish sportsman. He played hurling with his local club Ballygunner and with the Waterford senior inter-county team.[1]
Billy played his club hurling with his local Ballygunner team. He had some success at underage levels and in 1988 and 1989 he won two Under-21 County medal with the club. senior county medal with the club. Billy added senior county medals to his collection in 1992, 1995, 1996, 1997, 1999, 2001 & 2005. In 2001 he converted county medal into a Munster club hurling title. O'Sullivan won his seventh county championship title in 2005, playing in his14th senior county final. Billy also won an All-Ireland Clubs Sevens medal in 1993.
Billy still plays for Ballygunner at intermediate grade. He was elected club chairman in early 2010.
In 2000 Billy suffered a serious ankle injury against Killkenny in the national league.
Billy retired from inter-county hurling on a high after bringing Waterford back from 15 points down, scoring every point. In the first round of the Munster Championship in 2000 against Limerick.
{{Navbox
| name = Waterford NHL Team 1998
| title = Waterford – [[1998 National Hurling League Runners Up
| state = autocollapse
| listclass = hlist
| titlestyle = background:white; color:blue;
| border =
Waterford – 1998 National Hurling League Runners Up
{{Navbox
| name = Waterford NHL Team 1998
| title = Waterford – [[1998 National Hurling League Runners Up
| state = autocollapse
| listclass = hlist
| titlestyle = background:white; color:blue;
| border = child