Pa O'Sullivan was a Gaelic footballer from Killorglin, County Kerry. He played with Kerry at all levels during the 1990s. He was described as a 'star' and a 'teen sensation' for Kerry during the 90's.

He enjoyed much success at club level with Laune Rangers. In 1995 he won county Minor, Under and Senior titles with the club. He later won a Munster Senior Club Football Championship in 1995. He was later part of the panel as the club won the 1996 All-Ireland Senior Club Football Championship. Later in 1996 he won a second county and Munster titles.

In 1996 he won a Corn Uí Mhuirí and Hogan Cup with the Intermediate School, Killorglin as the team's captain.

He was one of the stats with Tralee IT teams that won Sigerson Cups in 1998 and 1999.

He also played hurling with Kerry and Under 14 and 16 levels.

He joined the Kerry minor team during the 1994 championship. Wins over Limerick, Cork and Clare saw O'Sullivan win a Munster title. He missed out on the All-Ireland semi-final win over Armagh. He returned for the All-Ireland final against Galway. He scored a point as Kerry took the title.

He was underage again in 1995, but Kerry lost out to Cork in the Munster first round after a replay.

He then moved on to the counties Under 21 team. His first game was when he came on as a sub in the 1996 All-Ireland semi-final win over Galway