Venues and concerts halls around the country are shutting their doors, following Government advice to curtail the spread of the coronavirus.
People are being advised that indoor mass gatherings of more than 100 people and outdoor gatherings of over 500 people should be cancelled.
As a result, several events are being postponed or called off.
The GAA has said all of its activity at club, county and educational levels is being suspended.
This will be in place until March 29th and include all games, training and team gatherings at all ages and all grades.
The GAA said: "We will continue to liaise with Government officials and review the situation between now and the end of the month, assessing the impact of these measures on our competitions."
In the meantime, the association is encouraging all members to continue to follow the guidelines which have been provided by authorities.
The Football Association of Ireland (FAI) is stopping all football under its jurisdiction until March 29th inclusive.
The FAI said the decision has been taken in light of the growing threat posed by the COVID-19 outbreak - and in the best interests of players, coaches, volunteers, supporters and staff.
The Football Association of Ireland announces the cessation of all football under its jurisdiction until March 29 inclusive, and with immediate effect following directives from Government, the Department of Health and UEFA.
More ➡️ https://t.co/68btbcLbat pic.twitter.com/V5HFfLawE5
— FAIreland ⚽️🇮🇪 (@FAIreland) March 12, 2020
The decision will be monitored "on an ongoing basis", it said.
The FAI remains in communication with the Department of Health and UEFA on COVID-19.
The holiday resort of Center Parcs is also closing for the duration.
The Longford village said: "In line with the Government position regarding coronavirus, the decision has been taken to close Longford Forest from Friday 13th March to Sunday 29th March 2020."
"Guests due to arrive at Longford Forest on those dates, we will be in contact to move your break to a different date or arrange a full refund.
"Our contact centre are working to process the changes as quickly - we ask you to wait for us to contact you, rather than calling us.
"We recognise that this will be disappointing news for guests looking forward to their break and we would like to thank you for your patience and understanding in these exceptional circumstances".
Promoter MCD has said all affected shows (that fall within those capacity numbers) have been postponed between now and March 29th.
It is currently working with artists and venues to re-schedule all dates.
"Original tickets purchased for all affected events will remain valid for rescheduled dates which will be notified to patrons on confirmation", it added.
Dublin's 3Arena has issued an almost identical statement.
— 3Arena (@3ArenaDublin) March 12, 2020
The National Concert Hall is to close from 6.00pm on Thursday through to midnight on March 29th inclusive.
It said: "All events scheduled to take place during this time are now cancelled. Customers will be refunded in due course.
"All offsite events will also be cancelled.
"The health and well-being of our customers, musicians and staff is of paramount importance to the National Concert Hall."
Cork Opera House has said it will close until Monday March 30th.
"All events scheduled to take place in this period, including tonight's performance of Leo Sayer, will be cancelled", it said.
Following the directives issued by the government and health authorities, Cork Opera House will close from 6pm today until Monday 30 March. All events scheduled to take place in this period including tonight’s performance of Leo Sayer, will be cancelled pic.twitter.com/ocLAFC1ruy
— Cork Opera House (@CorkOperaHouse) March 12, 2020
While Town Hall Theatre Galway said all performances are cancelled.
Management said this would apply to the Town Hall and Black Box Theatres from March 12th until 29th.
"This is in the interest of health and safety. Please keep an eye on our website and Facebook page for regular updates in the coming hours."
It added that full refunds apply to customers when an event is cancelled or abandoned, and its box office will be in touch.
The gym chain FLYEfit is closing all of its gyms until Monday March 30th.
It has notified members that all of its gyms will close from 6.00pm on Thursday.
It will not charge members for any period that its gyms are closed, and will add the 17 days that it is closed back onto their membership when it re-opens.
The company is also suspending all direct debit payments until April.
The band Aslan has also cancelled several dates in Dublin, Cork and Waterford.
— Aslan (@OfficialAslan) March 12, 2020