The following is a list of alternates for the 2018 Massachusetts Open Championship.
To review Mass Golf’s alternate policy in full, please click here. Any questions about the alternate policy can be directed to Kevin Eldridge via email (keldridge@massgolf.org) or phone (774-430-9103).
| Rank | Name | Affiliation | Qualifying Site | Date Added |
| 1 | Kevin Gately | CC of Halifax | Indian Pond CC | 5/30 |
| 2 | Nick Antonelli | North Andover, MA | Kernwood CC | 5/29 |
| 3 | Steven Burak | Thorny Lea GC | Indian Pond CC | 5/29 |
| 4 | Ryan Tomaso (a) | Hopedale CC | Nashawtuc CC | 5/29 |
| 5 | Bram Daly | Miacomet GC | Eastward Ho! | 5/29 |
| 6 | Dawson Prophett (a) | Cape Cod CC | Eastward Ho! | 5/29 |
| 7 | Emilio Bardini (a) | Granite Links GC | Eastward Ho! | 5/30 |
| 8 | Joseph Carrabino | Jupiter, FL | Kernwood CC | 5/29 |
| 9 | Frank Cossio | Brigantine, NJ | Pleasant Valley CC | 5/29 |
| 10 | Kevin Benstead | Danvers, MA | Nashawtuc CC | 5/29 |
| 11 | Matt Czarnecki (a) | Thorny Lea GC | Eastward Ho! | N/A |
| 12 | Jake Kramer | Bass Rocks GC | Nashawtuc CC | 5/29 |
| 13 | Chris Poli (a) | Oakley CC | Nashawtuc CC | 5/29 |
| 14 | Zack Ungvarsky (a) | Bradford CC | Kernwood CC | 5/29 |
| 15 | Kyle Piurkoski | Rochester, NY | Eastward Ho! | 5/29 |
| 16 | Jake Peer (a) | Winchester CC | Nashawtuc CC | 5/29 |
| 17 | John Jackson | Crumpin-Fox Club | Kernwood CC | 5/29 |
| 18 | Jim Morin (a) | Veterans Mem. GC | Eastward Ho! | 5/30 |
| 19 | Peter Bracey | Woburn CC | Kernwood CC | 5/30 |
| 20 | Jake Ratti (a) | Harmon GC | Eastward Ho! | 6/2 |
| 21 | Trent Han (a) | Ferncroft CC | Kernwood CC | 6/4 |
| 22 | David Dionne | Beverly G&TC | Kernwood CC | 6/5 |
| 23 | Stephen Hunt (a) | CC of Wilbraham | CC of Wilbraham | 6/6 |
| 24 | Fletcher Sokul (a) | Concord, NH | Kernwood CC | 6/7 |
| 25 | Rick Karbowski | Wachusett CC | Pleasant Valley CC | 6/7 |
| 26 | Alan Smith (a) | Gardner Municipal GC | Pleasant Valley CC | N/A |
