The 2024–25 Niagara Purple Eagles men's ice hockey season will be the 29th season of play for the program, the 27th at the Division I level and the 1st in Atlantic Hockey America. The Purple Eagles will represent Niagara University in the 2024–25 NCAA Division I men's ice hockey season, play their homes games at the Dwyer Arena and be coached by Jason Lammers in his 8th season.
| Jarrett Fiske | Goaltender | Graduation (Utah Grizzlies) | ||
| Olivier Gauthier | Forward | Graduation (retired) | ||
| Christian Gorscak | Forward | Graduation (retired) | ||
| Aron Jessli | Forward | Returned to juniors (Madison Capitols) | ||
| Steven Kesslering | Forward | Left program (retired) | ||
| Josh Lacelle | Goaltender | Rejoined club team | ||
| Jaedon Leslie | Forward | Graduation (retired) | ||
| Cole Mickel | Defenseman | Left program | ||
| Connor Mylymok | Forward | Graduate (signed with Idaho Steelheads) | ||
| Josef Myšák | Defenseman | Graduate transfer to Merrimack | ||
| Ryan Ouellette | Goaltender | Transferred to Northern Michigan | ||
| Carter Randklev | Forward | Graduate transfer to Bemidji State | ||
| Jack Richard | Forward | Transferred to Merrimack | ||
| Max Ruoho | Defenseman | Left program (retired) |
| Pierce Charleson | Goaltender | 24 | Aurora, ON
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| Rainers Dārziņš | Forward | 20 | Tukums, LAT | ||
| Grayson Dietrich | Forward | 22 | Calgary, AB
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| Braden Doyle | Defenseman | 23 | Lynnfield, MA
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| Trevor Hoskin | Forward | 20 | Belleville, ON | ||
| Kyler Kleven | Forward | 23 | Moorhead, MN
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| Ray Murakami | Defenseman | 21 | Tomakomai, JPN | ||
| Nathan Oickle | Defenseman | 21 | Peterborough, ON | ||
| Andy Reist | Forward | 20 | Waterloo, ON | ||
| Brett Roloson | Forward | 23 | Worcester, MA
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| Ross Roloson | Forward | 23 | Woodbury, MN
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| Deivs Rolovs | Goaltender | 20 | Riga, LAT | ||
| Spencer Young | Forward | 21 | Elmira, ON |
As of August 26, 2024.[1]
|-!colspan=12 style=";" | Exhibition|-!colspan=12 style=";" | Regular Season
See main article: 2024–25 NCAA Division I men's ice hockey rankings.