| O'Brien, John H. | 146729 | Knot Bad | 26 | MS3549AH | B1 |
| O'Brien Iv, William F. | 560 | Kristine Ann | 30 | 962064 | CL |
| O'Brien, David G. | 93989 | | | | SR |
| O'Brien, Joseph W. | 125903 | Rumdog | 30 | 998988 | B1 |
| O'Brien, Kevin P. | 142066 | Knot 2 Nite | 20 | MS7170KN | B1 |
| O'Brien, Patrick M. | 157453 | Paula Jean | 17 | MS4555B | B1 |
| O'Brien, Neil F. | 158454 | Toro | 32 | NH7806BP | B1 |
| O'Brien, Michael J. | 99256 | Pat & Mauree | 30 | MS7405AT | CL |
| O'Callaghan, Harold A. | 157382 | No Name ( O'Callaghan ) | 23 | MS9924AU | B1 |
| O'Coin Jr., Robert L. | 107498 | No Vessel (Shore Based) - - - - | 0 | | RR |
| O'Connell, James E. | 107602 | Summer Rules | 18 | MS3599HT | B1 |
| O'Connell, David T. | 1840 | Drift Away | 36 | 1053898 | CL |
| O'Connell, Daniel C. | 139362 | O,Sea | 19 | RI0982R | B1 |
| O'Connell, Dennis C. | 6018 | Lady Elaine | 44 | MS9495DC | CL |
| O'Connell, James M. | 130882 | 3jc | 24 | MS8688HB | SR |
| O'Connor Jr., James J. | 414 | Six Oaks | 22 | MS5503RR | CL |
| O'Day, Luke W. | 157163 | | | | SR |
| O'Donnell, Thomas F. | 93737 | Paid Over | 24 | MS0052Z | B1 |
| O'Donnell, John J. | 6958 | Jacko | 34 | MS5940AU | CL |
| O'Donnell, Thomas Joseph. | 17375 | Gale Winds | 22 | MS6633AC | CL |
| O'Farrell, Kevin P. | 155875 | | | | IN |
| O'Gorman, Gregory J. | 158193 | | | | RR |
| O'Hara, Brian J. | 148338 | Miss Judith | 72 | 672841 | ON |
| O'Hara Jr., Francis J. | 145964 | Sunlight | 109 | 1098004 | B3 |
| O'Hara Jr., James W. | 1779 | No Name (O'Hara) | 12 | MS5417SP | CL |
| O'Hara, Brian J. | 121011 | Charlotte G | 76 | 606024 | OL |
| O'Hara Corporation | 153294 | Polaris | 84 | 1198545 | B3 |
| O'Hara Corporation | 149838 | Nashira | 78 | 553032 | B2 |
| O'Hara Corporation | 104712 | Araho | 106 | 606424 | OL |
| O'Hara Corporation | 146097 | Ranger | 83 | 1143738 | B2 |
| O'Keefe, Timothy | 3261 | Lori O | 34 | 918270 | CL |
| O'Leary, Richard J. | 134230 | Sturdy Beggar | 31 | 1082116 | SS |
| O'Loughlin, Peter P. | 16624 | Decapod | 32 | 915473 | CL |
| O'Maley, Kevin A. | 1654 | Connemara Bay | 37 | 612164 | CL |
| O'Maley, Kellen | 155561 | Lila O | 19 | MS5069BT | SL |
| O'Meara, Eugene J. | 3930 | Brittany O | 38 | MS8558KR | CL |
| O'Neil, Brian C. | 4947 | Keva Marie | 21 | MS2896AB | CL |
| O'Neil, Gregory | 53381 | Hawk | 31 | 984450 | B1 |
| O'Neill, Timothy P. | 147642 | Irish Jig | 25 | MS2002DM | RR |
| O'Neill, Hugh | 157478 | No Name (O'Neill ) | 25 | MS3758AZ | B1 |
| O'Neill, Edward M. | 152080 | La Vida | 44 | 946643 | B1 |
| O'Neill, Johanthan T. | 152993 | | | | IN |
| O'Neill, Dennis M. | 3060 | Relentless Pursuit | 23 | MS0870HU | CL |
| O'Neill, Jeffrey C. | 140466 | Snow Bear | 32 | MS1598AB | B1 |
| O'Reilly Jr., Thomas G. | 5676 | Karen M | 35 | 974300 | CL |
| O'Rourke, Paul M. | 136414 | Olga Marie | 26 | 1094264 | B1 |
| O'Sullivan, Peter M. | 144437 | | | | IN |
| O'Sullivan, Matthew J. | 154766 | Molly O | 21 | MS7199AS | B1 |
| Oakland Sr., Douglas A. | 158460 | Reel Action | 44 | 929787 | B1 |
| Oakley, Floyd R. | 3457 | Andrea Lynn | 21 | MS6256HY | CL |
| Oates, Susan E. | 149548 | Noah | 25 | MS1146DJ | B1 |
| Ober, Theodore E. | 5788 | Tko | 22 | MS6533AT | CL |
| Obrien, Casey | 154932 | | | | SS |
| Obrien, Raymond | 154931 | | | | SS |
| Obrien, Mark L. | 152071 | | | | SS |
| Obrien Jr., Francis C. | 62068 | | 15 | | SS |
| Obrien, James B. | 153130 | J Sea S | 45 | 1159303 | B1 |
| Ocean Boy, Inc | 155439 | Ocean Boy | 74 | 544841 | B2 |
| Ocean Fishing Llc | 149595 | Ocean Lady | 75 | 611992 | B2 |
| Ocean Fishing Llc | 154727 | Pacer | 73 | 1131546 | B2 |
| Ocean Gold Inc | 150185 | Ocean Gold | 78 | 1037847 | ON |
| Ocean Pride, Inc. | 155209 | Ocean Pride | 79 | 973175 | ON |
| Ocean Princess Inc | 150182 | Ocean Princess | 81 | 916992 | ON |
| Ocean Queen Inc | 150188 | Ocean Queen | 74 | 673713 | ON |
| Ochse, Arthur A. | 153701 | Christian & Alexa | 87 | 937930 | B2 |
| Oconnell, Keith M. | 156686 | | | | SS |
| Oconnor, Francis W. | 156756 | Fishfinder | 35 | 1031317 | B1 |
| Odlin, James A. | 133452 | Harmony | 95 | 930191 | ON |
| Odlin, James A. | 143976 | Teresa Marie Iv | 81 | 1089264 | ON |
| Odlin, James A. | 121322 | Teresa Marie Iii | 83 | 677998 | ON |
| Odonnell, James M. | 146916 | Raven | 25 | MS4300A | B1 |
| Odonoghue, Michael J. | 146259 | Mlejo | 16 | MS5882AH | B1 |
| Odyssey Scallop Co Inc | 150189 | Odyssey | 79 | 686108 | ON |
| Oehme, Seth L. | 1818 | Aja O | 36 | 909604 | CL |
| Oeur, Hin | 156554 | Jonathan | 21 | MS7646BG | B1 |
| Offshore Enterprises, Inc | 152531 | Gina Marie | 42 | 1090277 | B1 |
| Ogg, William | 2640 | Pursuit | 44 | 934271 | CL |
| Ogiba, Edwin S. | 141655 | | | | SS |
| Ohanian, Gregg S. | 96713 | Mar-Lin | 23 | MS1001Y | B1 |
| Ohara Corporation | 157064 | Arcturus | 85 | 1219387 | B2 |
| Ohnemus, William C. | 6043 | Sea-Gem | 30 | 616414 | CL |
| Okeefe, Robert R. | 156026 | No Name (Okeefe) | 28 | MS9824AW | B1 |
| Olander, Fredrick G. | 146270 | Iron Lion | 20 | MS2222KR | B1 |
| Oleary, Thomas D. | 110018 | Seascape | 20 | MS3327FB | B1 |
| Oleson, Peter M. | 150766 | Hammerhead | 25 | MS0098PO | B1 |
| Olival, Thomas | 150518 | On Again | 24 | MS8707ZB | B1 |
| Oliveira, Michael S. | 5311 | Rebecca Ann | 34 | 913310 | CL |
| Oliver, Richard | 153493 | 10061522 | 34 | 1095717 | B1 |
| Oliver, Donald E. | 126184 | Lee-Marie | 31 | 1048785 | B1 |
| Oliver, Raymond S. | 138599 | No Vessel (Shore Based) - - - - | 0 | | SR |
| Oliver, William E. | 611 | Mary Jan | 22 | MS0107W | CL |
| Oliver Iii, Lawrence G. | 157989 | | | | RR |
| Oliver, William R. | 1713 | Maranatha | 35 | 605591 | CL |
| Oliver, Brian W. | 150198 | | | | SR |
| Oliver, Scott J. | 96211 | Chatterbox | 26 | MS8586KG | B1 |
| Olivia & Rafaela Fishing Llc | 153495 | Olivia & Rafaela | 71 | 553777 | ON |
| Olivia & Rafaela Fishing Llc | 144733 | Ilha Brava Ii | 76 | 693587 | ON |
| Olmsted, Christopher C. | 155477 | | | | RR |
| Olsen, Kirk L. | 70128 | | | | SS |
| Olsen, Brent L. | 158429 | True North | 39 | 940778 | B1 |
| Olsen, Edward W. | 116739 | Seeker | 47 | 935969 | B1 |
| Olson Jr., Albert W. | 7115 | Easy Livin | 31 | 659738 | CL |
| Olson, David G. | 156080 | | | | IN |
| Olson, Clarence G. | 141720 | Teacher'S Pet | 28 | 1115258 | B1 |
| Olson, Robert W. | 108095 | No Name (Olson) | 23 | MS7771AD | SS |
| Olson, Richard C. | 3454 | 4 Oh'S | 18 | MS9923E | CL |
| Olsovsky, Charles | 152856 | Virginia Dare | 92 | 602653 | B2 |
| Omaley, Michael C. | 149389 | | | | SS |
| One Son Fishing Llc | 158651 | Flight 1 | 60 | 648425 | ON |
| Oneil, Michael J. | 120313 | No Name (Oneil) | 16 | MS8325MJ | SR |
| Oneil, Terence P. | 156506 | | | | RR |
| Oneill, Jeremiah M. | 152813 | Miss Lanie | 46 | MS1340AR | B1 |
| Oneonta Fisheries Inc | 148385 | Resilient | 83 | 1038788 | ON |
| Onorato, Ronald A. | 138287 | Sea Dog | 23 | NY6494FR | B1 |
| Opie, Douglas B. | 5437 | Broken Arrow | 28 | MS1224SL | CL |
| Opozda, Edmund Keith. | 158343 | | | | SS |
| Opozda, Edmund K. | 152953 | No Name (Opozda) | 24 | MS3491AR | B1 |
| Orcutt, Peter | 155322 | No Name (Orcutt) | 17 | MS6560HU | IN |
| Orcutt, Patricia | 135103 | | | | SS |
| Orcutt, Jeff M. | 139577 | | | | IN |
| Ordile, Anthony R. | 5361 | No Vessel (Ordile) | | | CL |
| Ordonez, Jose J. | 155876 | Victoria | 26 | MS9773AS | B1 |
| Orion Venture Llc | 150186 | Orion | 82 | 611248 | ON |
| Ork, Chea | 156636 | | | | RR |
| Orlando, Anthony | 154858 | | | | RR |
| Orlando, Christopher G. | 134930 | Saltine3 | 30 | MS2824AK | B1 |
| Orlando, Joseph | 92124 | Padre Pio | 65 | 632107 | ON |
| Ormsby, Garry P. | 69683 | Get It On | 23 | MS4457ZB | B1 |
| Ormsby, Garrett J. | 82144 | | | | IN |
| Orsillo, Chris A. | 9319 | Trapper John | 42 | 911382 | CL |
| Osattin, Stuart M. | 139112 | Zinger | 46 | 950772 | B1 |
| Osbahr, Derek G. | 155644 | No Name (Osbahr) | 16 | MS0934MD | SL |
| Osbahr, William A. | 157508 | No Name (Osbahr) | 16 | MS0934MD | B1 |
| Osborne Iii, Charles W. | 158318 | Tin Can | 14 | MS3704KP | B1 |
| Osgood, Alfred S. | 725 | Starlight | 78 | 582665 | B2 |
| Osier, David J. | 154432 | Christina Carol | 50 | 692411 | ON |
| Osier, David J. | 144461 | Paulo Marc | 63 | 690278 | OL |
| Osier, David J. | 148557 | Blue Water Iii | 56 | 641517 | ON |
| Osmers, Thomas J. | 83358 | Adthorn/F.Fr | 30 | MS7810H | B1 |
| Osmers, John P. | 156955 | | | | SR |
| Osmond, Derek R. | 152906 | Joz | 19 | MS6095KN | SL |
| Osmond, Ryan P. | 145012 | No Vessel (Shore Based) - - - - | 0 | | RR |
| Osowski, Carl A. | 148564 | | | | RR |
| Osowski, Angela J. | 156624 | | | | SS |
| Oster, Robert G. | 530 | Chelle Rae | 32 | 1024816 | CL |
| Ostrander, Stephen T. | 158214 | Abby O | 32 | MS4360AM | B1 |
| Ostrom, Gary E. | 5972 | Rare Bird | 31 | 907269 | CL |
| Ostrom, Joshua E. | 155514 | | | | SR |
| Ostrowski, Matthew F. | 139315 | No Name (Ostrowski) | 20 | MS9524AA | B1 |
| Osullivan, Patrick | 150515 | 4 Sulls | 23 | MS1375PH | B1 |
| Othote, Louis J. | 131582 | No Name (Othote) | 16 | MS4686KW | RR |
| Otoole, Nicholas J. | 157265 | Three Reasons | 10 | MS7995AU | RR |
| Ott, Timothy W. | 158186 | Hot Two | 48 | NY5232FA | B1 |
| Ouellette, Roger N. | 154815 | Finaddicts | 24 | MS7226AF | B1 |
| Ouillette, Edward J. | 107648 | | | | RR |
| Our, Christopher W. | 158449 | Our Time | 56 | 926232 | B1 |
| Our Jr., John L. | 71350 | Miss Fitz | 42 | 983256 | ON |
| Our, John D. | 1173 | Barbara O | 35 | 1200874 | B1 |
| Our Nash, Kimberly A. | 158499 | | | | SS |
| Ourique, Jose S. | 156964 | Grandpa | 20 | MS0728JO | B1 |
| Owen, Carlos J. | 138908 | My Honey | 28 | 688380 | B1 |
| Owens, Joseph P. | 138849 | Miss Elizabeth | | 1062871 | B1 |
| Oyer, Kevin J. | 152823 | | | | SS |
| Ozolins, Shawn J. | 151927 | Kelly J | 26 | MS1217SK | B1 |