Roy Keane, Paul O'Connell and Cian Healy complete the #IceBucketChallenge with barely a flinch

Roy Keane has nominated Ireland manager Martin O'Neill for the ice Bucket Challenge

Known for his ice-cool demeanour, Roy Keane joined the legions partaking in the Ice Bucket Challenge and the Cork man took it in his stride.

The Republic of Ireland and Aston Villa assistant managed accepted the nomination and with little fuss took his soaking before calling on Martin O'Neill to follow suit.

Over to you Martin.

Here are some other Irish celebrities who have done their bit for charity.

With the help of the Blanchardstown Fire Brigade, Cian Healy took the challenge aspect up a considerable notch.

Paul O'Connell got his Munster team to help out, and he nominated President Michael D. Higgins before getting numerous buckets of water thrown over him.

Sharon Ni Bheolain

Marty Whelan

Jennifer Maguire

Ray D'Arcy

Kathyrn Thomas

Kathryn Thomas taking the challenge with the help of Marty Whelan

Rory McIlroy

Businessman Denis O' Brien

Ryan Tubridy

Rosanna Davison

Rosanna Davison doing her #IceBucketChallenge

Ronan Keating

Niall Horan

Daithi O' Sé

Daithi O Se takes the ice bucket challange at the Rose of Tralee

Jenny Greene

Chris De Burgh