The world's richest man remains Mexican telecoms tycoon Carlos Slim Helu, who has topped the Forbes rich list list for a second year. He has increased his wealth by $20.5 billion to $74 billion.
Microsoft boss Bill Gates was second with $56 billion and investor Warren Buffett was third with $50 billion.
The richest person listed for Ireland - 103rd overall at $8.8 billion - is Pallonji Mistry. Forbes calls him a reclusive construction tycoon who is rarely seen in public.
His company is famous for building two 60-story residential towers in Mumbai and he has holdings in Tata and Corus Steel, Jaguar, Land Rover and Tetley. He is listed as having Irish citizenship, but lives in Mumbai.
Dermot Desmond is in there too, his net worth is down from a peak of $2.5 billion in 2008 to $1.6 billion this year. He is fifth overall in Ireland and in the 700s worldwide. John Dorrance of Campbell Soup and Martin Naughton of Glen Dimplex are there too.
The number of billionaires in the UK has increased to 32 with the Duke of Westminster Gerald Cavendish Grosvenor again named the country's richest man. The UK has three more billionaires than last year.
Property tycoons David and Simon Reuben were second on the UK rich list with $8 billion, followed by high street mogul Sir Philip Green with $7.2 billion. The Reubens placed 114th overall while Green was 132nd.
Virgin boss Richard Branson, landowner Charles Cadogan and Formula 1 boss Bernie Ecclestone were next, each with a fortune of $4.2 billion.
Other UK billionaires included Harry Potter author JK Rowling who is worth $1 billion and has been on the list for a number of years.
There were six 'Facebook billionaires' on the global list, including founders Mark Zuckerberg and Eduardo Saverin, as well as the world's youngest billionaire Dustin Moskovitz, who is just 26-years-old, and Napster entrepreneur Sean Parker.
The Forbes 25th list of the richest people on the planet saw the number of billionaires increase by 214 to a record 1,210, with an average net worth of $3.7 billion each.
For the first time in more than a decade, the number of billionaires in Asia (332) was more than Europe (300), while the US continued to have the most billionaires, with 413.
China, which has the world's second largest economy after the US, had 115 billionaires, while Russia had 101 billionaires.
Moscow was home to more billionaires than any other city in the world, with 79 of the world's wealthiest people choosing to live in the Russian capital.
Europe's richest person was Frenchman Bernard Arnault, of luxury brand group LVMH (Moet Hennessy Louis Vuitton), who moved into fourth spot overall with a fortune of $41 billion.
There were 300 European billionaires, 50 more than last year, with 72% self-made. And although most managed to increase their wealth last year, not everybody did.
Ikea Founder Ingvar Kamprad was the year's biggest loser, dropping 151 places to 162 with his fortune plunging from $23 billion to $6 billion.
