The winning ticket was sold in Dublin
There was one winner of the Lotto jackpot on Saturday worth more than €9.4m.
The numbers drawn were 1, 16, 17, 32, 34 and 35.
The bonus number was 5.
The National Lottery says the winning ticket was sold at the Spar store on Talbot Street in Dublin 1.
A National Lottery spokesperson said: "A lucky person woke up this morning a multi millionaire. This is the second highest jackpot win this year.
"With the excitement of the McGregor fight in Las Vegas last night, we don't want people to forget to check their Lotto numbers to see if they are the holders of the golden ticket".
The National Lottery advises players to check their tickets.
If you are one of the lucky ticket holders, sign the back of the ticket and contact the National Lottery Prize Claims Team on 01-836-4444.
Owner of the Spar store on Talbot Street, Ulrike Campbell, said: "We just can't believe it. This is an absolutely massive win for our customers.
"It's an emotional win for me too as the store was opened 30 years ago by my father-in-law and I had been running it with my husband for 23 years who recently passed away.
"All of the staff here are going to enjoy the celebrations today and we send our best wishes to our lucky customer who is €9.4m richer".