The Westmeath man says he would be a "political disaster".
Michael O'Leary says he would be a "political disaster".
There had been numerous calls for the Ryanair group CEO to run for office due to his success in running the airline.
However speaking to Reuters, the Westmeath man had some choice language to describe the industry:
He also says his decision to phase out Gigginstown House Stud is because he wanted fewer distractions.
He announced in May that there will be no young horses bought, and the operation in Westmeath will be wound down over the next five years.
The stud produced Tiger Roll, which won the last two Aintree Grand Nationals.