He will also make a major announcement about funding
The Taoiseach Leo Varadkar is to be a guest at the Lotto draw on Wednesday night to mark 30th anniversary of the organisation.
He will also make a major announcement about good cause funding.
An audience comprised of good cause representatives and National Lottery winners will attend the special live draw at RTÉ in Dublin.
The draw will be broadcast live with Lotto presenter Nuala Carey at 7.55pm.
Mr Varadkar will then make an announcement live on air.
Approximately 30c of every euro generated by National Lottery sales goes towards projects in the areas of sport and recreation, health and welfare, national heritage, the arts, and the Irish language.
Last year €210m was raised for good causes with the funds.
National Lottery chief executive Dermot Griffin said it was important to remind people that the group was set up to raise funds for good causes in Ireland.
"We also provide people with exciting fun games and we always promote responsible play.
"We created over 800 millionaires in the last 30 years whose lives have changed as a result."
Tonight’s jackpot is worth approximately €5.5m.