Hundreds of thousands of people took part in St Patrick's Day festivities in dozens of parades around the country.
'Ireland, You Are' was the theme of the St Patrick's parade in Dublin.
Theatrical groups from across the country were invited to respond to the theme, and included Bui Bolg, Dowtcha puppets and Brighter Futures.
This year's Grand Marshall was Olympic Silver Medalist Annaleise Murphy.
Despite the cold and wet conditions, thousands of people from home and abroad lined the parade route.
Other parades around the country were not so lucky - with some events cancelled because of wet and windy weather.
Over 60 community groups, including Cork Community Artlink, Macnas, Spraoi and Dowtcha Puppets took part in the Cork parade, which was led by Captain Brian Prendergast and by the Army Band of the 1st Brigade.
This year's Grand Marshall was celebrity chef Rachel Allen who was driven in a 1926 Ford Model T Tourer Car accompanied by the city Lord Mayor Des Cahill, who was at the Shamrock Ceremony at the White House yesterday.
The Model T was among a number of Ford cars in the parade as the company celebrates its 100-year-old ties with the city having established its first purpose-built factory outside of the US there in 1917.
The parade is just one of a series of events taking place over the weekend, including the Lee Sessions Trad Trail, a pop-up food festival and a St Patrick's Hill Ball Run.
There were also over 15 parades in the county.
In Galway, the city's 114th St Patrick's Day parade was led by local man and adventurer, Gavan Hennigan, who recently returned from rowing solo across the Atlantic.
This year's procession gave locals a platform to showcase the talents of artists and various community groups.
Meanwhile in Limerick, thousands came out in very poor weather conditions to view this year's parade.
The theme was 'Telling Stories' and voluntary, community and sports groups were encouraged to tell and share their own stories, celebrate their history, and look to the future.
A special feature this year is a presentation by the Limerick street theatre company Lumen, who told the story of the River Shannon, which runs through the city.
In his traditional St Patrick's Day mass for the Defence Forces, Bishop of Limerick Brendan Leahy remembered in particular the heroism and mission of Irish Coastguard pilot Dara FitzPatrick and her colleagues who perished in a helicopter crash off the Mayo coast earlier this week.
Bishop Leahy said they had displayed the message of St Patrick in how they sacrificed so much and dedicated their lives so fearlessly to others.
The parade was led by 14-year-old Luke Culhane, who has won a number of awards, and has been named Limerick person of the year for his video which tackled cyber bullying and has been viewed over 5m times on social media.
Archbishop of Armagh and Primate of All Ireland Eamon Martin also paid tribute to the crew of Rescue 116 in his St Patrick's Day message.
He paid tribute to the work of the Irish Navy in their humanitarian efforts in the Mediterranean where they have helped rescue thousands of migrants and refugees, remembering that St Patrick once described himself as the "unlearned refugee".
Elsewhere, parades in Gaoth Dobhair, Dunfanaghy and An Fál Carrach in Co Donegal, and Cill Chiaráin in Conamara were cancelled due to to very wet and windy weather.