The draw took place in Amsterdam this evening with Ireland competing in League B for a second competition in a row.
Wales will be no strangers to the Boys in Green in this competition, with the two sides going head-to-head in the first edition of the Nations League in 2018.
Ireland took on Bulgaria as recently as September with Mick McCarthy’s team running out 3-1 winners. The last meeting between Ireland and Finland was as far back as 2002 which ended in a 3-0 win for the Irish in Helsinki.
Ireland will play their Group B4 fixtures on the following dates:
MD1: 3-5 September
MD2: 6-8 September
MD3: 8-10 October
MD4: 11-13 October
MD5: 12-14 November
MD6: 15-17 November
The winner of the group will be promoted to League A, for the 2022-23 competition, with the bottom team getting relegated to League C.
Speaking after the draw Republic of Ireland manager Mick McCarthy said: “That draw was as good as we could have got. If Stephen Kenny was watching back home he will be very happy.
“When I see the Russia, Serbia, Turkey, Hungary group, we could have been in there.
“Wales are the stand-out side and they had a great 2016 European Championships and they’re already looking forward to this summer’s finals.
“We’ve played Bulgaria and beaten them recently and that experience will be good for any of my players if they come up against them in the Nations League. I don’t know a lot about Finland but I’m sure the players will look forward to the playing them in the group.
“The Nations League is a good tournament. I enjoyed the games the first time around and the competitive nature of them - it’s so much better than friendlies.”