| ICSA Match Race National Championship | Stanford | National Championship Finals | 1 Division | | Official | 1/10 |
| LaserPerformance Men's Singlehanded Nationals | Grand Valley State | National Championship Finals | Singlehanded | | Official | 6/18 |
| LaserPerformance Women's Singlehanded Nationals | Grand Valley State | National Championship Finals | Singlehanded | | Official | 3,7/18 |
| The 78th Professor Schell Trophy | Dartmouth | Conference Championship | 2 Divisions | | Official | 7/18 |
| Nickerson Trophy 2018 | Tufts | NOT ALLOWED Interconference | 2 Divisions | | Official | 3/17 |
| Victorian Urn Trophy | Bowdoin | Conference Championship | 2 Divisions | | Official | 2/16 |
| Oberg Trophy | Northeastern | NOT ALLOWED In-Conference | 3 Divisions | | Official | 4/20 |
| Fiske-Harriman-Sleigh Trophy Coed Showcase | St. Mary's | Showcase | 2 Divisions | | Official | 6/18 |
| Women's Showcase Finals | Brown | Showcase | 2 Divisions | | Official | 8/18 |
| 2018-NEISA Match Race Champs-Larry White Trophy | MIT | Conference Championship | 1 Division | | Official | 2/8 |
| Sister Esther Open | Salve Regina | NOT ALLOWED In-Conference | 2 Divisions | | Official | 1/18 |
| Harvard Coed Showcase 2 | Harvard | Showcase | 2 Divisions | | Official | 8/18 |
| Hewitt Trophy Division 1 | Dartmouth | NOT ALLOWED In-Conference | 1 Division | | Official | 7/16 |
| Hewitt Trophy Division 2 | Dartmouth | NOT ALLOWED In-Conference | 1 Division | | Official | 3,4/17 |
| Danmark Trophy | Coast Guard | NOT ALLOWED Interconference | 2 Divisions | | Official | 4/20 |
| George Warren Smith Trophy | MIT | NOT ALLOWED In-Conference | 2 Divisions | | Official | 5/20 |
| Women's Showcase | St. Mary's | Showcase | 2 Divisions | | Official | 6/17 |
| Sherman Hoyt Trophy | Brown | NOT ALLOWED In-Conference | 2 Divisions | | Official | 8/18 |
| Mrs. Hurst Bowl | Dartmouth | NOT ALLOWED In-Conference | 2 Divisions | | Official | 4/16 |
| Hood Trophy | Tufts | NOT ALLOWED In-Conference | Combined | | Official | 7/11 |
| Norman Reid Trophy | Boston College | NOT ALLOWED In-Conference | 2 Divisions | | Official | 2,8/17 |
| Nicholas Barnett Trophy | Bowdoin | NOT ALLOWED In-Conference | 2 Divisions | | Official | 10,12/17 |
| The Hatch Brown Memorial Trophy | MIT | NOT ALLOWED In-Conference | 3 Divisions | | Official | 8/17 |
| NEISA Women's Singlehanded Championships | Boston College | Conference Championship | Singlehanded | | Official | 2,6/11 |
| NEISA Men's Singlehanded Championships | Boston College | Conference Championship | Singlehanded | | Official | 2,6/20 |
| Penobscot Bay Open | Maine Maritime | NOT ALLOWED In-Conference | 2 Divisions | | Official | 1/11 |
| Harman Cup | Maine Maritime | NOT ALLOWED In-Conference | 1 Division | | Official | 2/8 |