More than 100,000 people are expected in the town of Killorglin over the next three days to see the crowning of a seven-year-old wild goat, nicknamed Elvis.
The white goat, which was captured on nearby mountains, will be crowned King of the Puck Fair today.
The crowds will gather to see the annual hoisting of the wild male goat or "puck" on to a 40-foot platform.
"It is a big boost to the area. It will be choc-a-bloc with people. It is obviously the busiest week of the year," said Mr Declan Mangan, chairman of the Puck Fair organising committee.
A team of goat catchers search nearby Glenbeigh, Rossbeigh and Seefin mountains each year to catch a fittingly regal goat.
This year the chief goat catcher, Mr Frank Joy, accompanied by a seven-man team, reeled in Elvis, a sprightly white goat, with a spot of black on his coat.
At the age of seven, this year's King of Puck Fair is slightly younger than usual.
Mr Joy, who has been catching the wild goats by hand for almost two decades, brought the goat down the rough mountainside terrain to his farm last week.
The goat will be fed a careful diet of herbs and mountain grasses and then released back to his herd at the weekend.
PA