2021 Rensselaer Mens Hockey Schedule
| Oct 2 | 4:00 ET |  | @Union | W 5-2 |
| Oct 8 | 7:00 ET |  | Bowling Green | T 2-2 |
| Oct 9 | 7:00 ET | | Bowling Green | L 2-3 |
| Oct 15 | 7:00 ET |  | Canisius | W 6-2 |
| Oct 16 | 7:00 ET | | Canisius | L 2-3 |
| Oct 23 | 7:05 ET |  | @Vermont | W 2-1 |
| Oct 29 | 7:00 ET | | @Union | W 4-2 |
| Oct 30 | 7:00 ET | | Union | W 3-0 |
| Nov 5 | 7:00 ET |  | St. Lawrence | L 3-4 |
| Nov 6 | 7:00 ET |  | Clarkson | W 3-1 |
| Nov 12 | 7:00 ET |  | @Colgate | L 2-5 |
| Nov 13 | 7:00 ET |  | @Cornell | L 3-11 |
| Nov 19 | 7:00 ET | LIU | W 7-2 | |
| Nov 20 | 8:00 ET | @LIU | T 2-2 | |
| Nov 26 | 7:00 ET |  | Northeastern | L 1-2 |
| Nov 28 | 3:00 ET | | @Northeastern | L 1-2 |
| Dec 3 | 7:00 ET |  | Quinnipiac | L 0-2 |
| Dec 4 | 7:00 ET |  | Princeton | W 4-1 |
| Dec 10 | 7:07 AT |  | @Alaska | W 4-1 |
| Dec 11 | 7:07 AT | | @Alaska | L 0-4 |
| Dec 14 | 7:07 AT | | @Alaska | L 2-3 |
| Dec 15 | 7:07 AT | | @Alaska | L 1-4 |
| Dec 16 | 7:07 AT | | @Alaska | |
| Dec 30 | 2:00 ET | | Vermont | W 3-2 |
| Jan 2 | 2:05 ET |  | @Army | T 3-3 |
| Jan 7 | PPD |  | @Harvard | |
| Jan 8 | PPD |  | @Dartmouth | |
| Jan 14 | 7:00 ET | | @Clarkson | |
| Jan 15 | 7:00 ET | | @St. Lawrence | |
| Jan 16 | 5:00 ET | | @Clarkson | L 0-5 |
| Jan 17 | 3:00 ET | | @St. Lawrence | W 4-0 |
| Jan 21 | 7:00 ET |  | Yale | L 3-5 |
| Jan 22 | 7:00 ET |  | Brown | L 2-3 |
| Jan 25 | 7:00 ET | | @Harvard | W 2-0 |
| Jan 29 | 2:00 ET | | Union | L 0-2 |
| Feb 1 | 6:00 ET | | @Dartmouth | W 2-0 |
| Feb 4 | 7:00 ET | | @Princeton | L 2-3 |
| Feb 5 | 7:00 ET | | @Quinnipiac | L 0-1 |
| Feb 11 | 7:00 ET | | Cornell | W 6-2 |
| Feb 12 | 7:00 ET | | Colgate | L 2-3 |
| Feb 18 | 7:00 ET | | @Brown | W 4-2 |
| Feb 19 | 7:00 ET | | @Yale | L 2-5 |
| Feb 25 | 7:00 ET | | Dartmouth | W 6-3 |
| Feb 26 | 7:00 ET | | Harvard | L 1-5 |
| Mar 4 | 7:00 ET | | Dartmouth | L 2-3 |
| Mar 5 | 7:00 ET | | Dartmouth | W 3-2 |
| Mar 6 | 4:00 ET | | Dartmouth | W 5-3 |
| Mar 11 | 7:00 ET | | @Harvard | L 3-4 |
| Mar 12 | 7:00 ET | | @Harvard | W 4-3 |
| Mar 13 | 4:00 ET | | @Harvard | L 1-3 |