Coach Nigel Carolan has made four changes to the side that overcame Scotland 24-20 in the last round of the competition.
Jack Owens makes his first appearance of the tournament on the wing to partner Jacob Stockdale who returns to the opening XV.
Up front, Zack McCall returns to the front row and Rory Moloney takes position in the back row.
Speaking ahead of the test Carolan said, "This is a big game for both sides, the winner of this will have a guaranteed place in the semi-finals.”
"New Zealand are a good team, so we will need to be brilliant for the full 80 minutes to give ourselves a chance.”
"However, in preparation for a tough battle we have recovered well from our last outing and have identified some key areas which we hope we can take advantage of."
This game will be broadcast live on TG4.
Ireland Under-20 (v New Zealand Under-20s, 2015 World Rugby Under-20 Championship - Pool C, Viadana, Wednesday 10th June, kick-off 8.30pm local time/7.30pm Irish time)
15. Billy Dardis (UCD/Leinster)
14. Jack Owens (Queen's University Belfast/Ulster)
13. Garry Ringrose (UCD/Leinster)
12. Sam Arnold (Ballynahinch/Ulster)
11. Jacob Stockdale (Queen's University Belfast/Ulster)
10. Joey Carbery (UCD/Leinster)
9. Nick McCarthy (UCD/Leinster) (Capt)
1. Andrew Porter (UCD/Leinster)
2. Zack McCall (Queen's University Belfast/Ulster)
3. Oisin Heffernan (Terenure College/Leinster)
4. David O'Connor (St. Mary's College/Leinster)
5. Alex Thompson (Queen's University Belfast/Ulster)
6. Josh Murphy (UCD/Leinster)
7. Rory Moloney (Buccaneers/ Connacht)
8. Lorcan Dow (Queen's University Belfast/Ulster)
16. Sean McNulty (UCD/Leinster)
17. Liam O'Connor (Cork Constitution /Munster)
18. Conan O'Donnell (Sligo/NUIG/Connacht)
19. Cian Romaine (Buccaneers/ Connacht)
20. Stephen McVeigh (Buccaneers/ Connacht)
21. Charlie Rock (Old Belvedere/Leinster)
22. Tomás Quinlan (Cork Constitution/Munster)
23. Fergal Cleary (Lansdowne/ Leinster)
Ireland Fixtures and Results
Ireland Under-20 18 v 16 Argentina Under-20, Parma, Tuesday, June 2, kick-off 4.30pm local time/3.30pm Irish time
Ireland Under-20 24 v 20 Scotland Under-20, Calvisano, Saturday, June 6, kick-off 4.30pm local time/3.30pm Irish time
New Zealand Under-20 v Ireland Under-20, Viadana, Wednesday, June 10, kick-off 8.30pm local time/7.30pm Irish time
Match Day 4: Play-offs and semi-finals, Monday, June 15
Match Day 5: Play-offs and final, Saturday, June 20