Breifne O'Brien is an Irish socialite businessman and rogue financial advisor. A key figure in Ireland's Celtic Tiger, he has been called "Ireland's Bernie Madoff". His residences included a lavish family home in Glenageary, an apartment on Dalkey’s Vico Road and a golfing villa in Barbados. He drove an Aston Martin DB7 and had close on 100 bank accounts. After admitting in 2008 to his investors—many of whom were close friends—that he had taken millions of Euros of their money to fund a lavish lifestyle and could not pay it back, he was investigated by the Garda Síochána Fraud Squad. He has since been bailed out by his own mother and is on trial over his part in an investment fraud. He pleaded guilty to a sample of charges brought against him involving sums totalling more than ten million euro and is due to be sentenced in October 2014.
His family home is Carrigrohane Castle in Cork, his father Leo was a businessman and his younger brother is RTÉ rugby commentator Daire O'Brien . Married to Fiona Nagle,he was renowned for hosting parties at his posh Dublin home.
- Burke, Roisin (22 July 2012). "Rogue adviser Breifne O'Brien to cash in on Berlin sale". Sunday Independent. Retrieved 22 July 2012.
- Kelly, Antoinette (21 September 2012). "Ireland's Bernie Madoff appears in court over investment scam". Irish Central. Retrieved 21 September 2012.
- Sheehan, Maeve (18 December 2011). "The fall of King Con". Sunday Independent. Retrieved 18 December 2011.
- "RTÉ star's €3k bet 'con': TV pundit Daire refused to pay wager says bookie girl". Sunday World.[dead link]
- "O'Brien loses his sparkle". Evening Herald. 28 May 2012. Retrieved 28 May 2012.
- Hogan, Louise (21 September 2012). "Celtic Tiger party boy Breifne O'Brien bailed out by pensioner mum". Irish Independent. Retrieved 21 September 2012.
- Hogan, Louise (20 September 2012). "Socialite businessman Breifne O’Brien charged with theft of €11m". Irish Independent. Retrieved 20 September 2012.
- "Fiona Nagle: How I moved on after 'very, very difficult period for all of us". evoke.ie. 15 February 2015.