| Emergency | 911 |
| Montauk Police | (631)668-3709 |
| Montauk Fire & Ambulance | (631)668-2464 |
| Montauk Medical | (631)668-3705 |
| Montauk Downs State Park (golf, camping & hiking) | (631)668-5000 |
| Hither Hills State Park (camping) | (800)456-2267 |
| Theodore Roosevelt County Park (camping, hiking & museum info) | (631)852-7879 |
| Montauk School | (631)668-2474 |
| Montauk Historical Society | (631)668-5340 |
| Montauk Library | (631)668-3377 |
| Long Island Railroad | (631)231-5477 |
| Montauk Point Lighthouse | (631)668-2544 |
| East Hampton Town Clerk Annex (permits for beach & town parking, recycling center, fishing, etc.) | (631)668-5081 |
| East Hampton Town Justice | (631)324-4134 |
| U.S. Coast Guard - Montauk | (631)668-2773 |
| The Riverhead Foundation for Marine Research and Preservation | (631)369-9840 |
| Montauk Chamber of Commerce | (631)668-2428 |