|Irish name||Sean Ó Diomsaigh|
|Born||County Laois, Ireland|
A former player for the Laois senior football team, Dempsey had enjoyed huge success as an underage team coach and manager and in late 2008 was appointed to succeed Liam Kearns in the top job of Laois football. After two relatively unsuccessful years in the position, he was relieved of the job in July 2010 and replaced by Justin McNulty.
Dempsey is highly regarded as a manager and coach and during his spell with Laois minors he turned them into one of the top underage teams in Ireland, the highlight being the 2003 All-Ireland Minor Football Championship title.
After a successful minor football career, he graduated to become a member of the Laois Under 21 and senior football panels, playing alongside his brothers Martin and Mick for many years.
- Irish Independent. "Rogers injury blow to new Laois boss Dempsey". 20 December 2008. Retrieved on 30 May 2013.
- BBC. "Justin McNulty is named new Laois football manager". 16 August 2010. Retrieved on 30 May 2013.
|Laois Senior Football Manager