Attendance at weddings will increase from 50 to 100 from Thursday, August 5th.
Cabinet ministers have signed off on the move having initially maintained some reticence about the plan.
Baptism ceremonies will also be permitted in August, but without the usual gathering to celebrate.
However, Taoiseach Micheál Martin says the Government will wait a number of weeks before deciding whether to ease any more restrictions:
"So after the indoor dining, after the one or two decisions today, we'll then take stock over the coming weeks in terms of how the Delta variant behaves."
"Government will keep this under review in August.
"There'll be a number of Covid cabinet sub-committee meetings in August to monitor the course of the virus."
