MOS List is not complete, mixed branches (i.e. Airforce & Army: double MOS codes possible). Additions are welcomed...
| Mos # | Assigned Military Occupational Specialty: |
| . | . |
| 001 | Photographer |
| 002 | Weapons Mechanic |
| 003 | Photographic Equipment Technician |
| 004 | Army Air Force Aerial Photographer |
| 005 | Brake Inspector |
| 006 | Army Air Force Airplane Engine Mechanic |
| 007 | Army Air Force Airplane Fabric Worker |
| 008 | Army Air Force Airplane and Engine Mechanic |
| 011 | Gunsmith |
| 012 | Electrician for Automotive Machinery |
| 013 | Diesel Mechanic |
| 014 | Automotive Mechanic |
| 016 | Laboratory Technician for V-Mail or Microfilm |
| 017 | Baker |
| 024 | Blacksmith |
| 030 | Boilermaker |
| 034 | Bricklayer |
| 035 | Carpenter Heavy Construction |
| 037 | Meat Cutter |
| 039 | Cable Splicer/Tester for Telephone and Telegraph |
| 040 | Automobile Body Repairman |
| 041 | Cable Tester/Repairman for Telephone and Telegraph |
| 042 | Camera Repairman |
| 043 | Cameraman for Motion Picture |
| 044 | Canvas Cover Repairman |
| 050 | Carpenter, General |
| 052 | Chief Clerk |
| 055 | Clerk |
| 056 | Mail Clerk |
| 059 | Foreman Construction |
| 060 | Cook |
| 061 | Coppersmit/Tinsmith |
| 063 | Crane (Machine) Operator |
| 064 | Shovel (Machine) Operator |
| 067 | Dental Laboratory Technician |
| 067 | Message Center Clerk |
| 070 | Draftsman |
| 071 | Draftsman Mechanical |
| 072 | Physical Therapy Technician |
| 074 | Draftsman Structural |
| 075 | Draftsman Electrical |
| 076 | Draftsman Topographic Charts and Reports | 078 | Electrician |
| 081 | Engineman Operating |
| 086 | Foreman Machine Shop |
| 089 | Installer/Repairman Telephone and Telegraph |
| 095 | Central Office Repairman |
| 098 | Instrument Repairman Nonelectrical |
| 103 | Laundry Machine Operator |
| 111 | Machinist |
| 114 | Machinist |
| 115 | Automatic Telephone System Maintenance Man |
| 116 | Machinery Supervisor Railway |
| 121 | Utility Repairman |
| 123 | Male Nurse Practical |
| 124 | Steward |
| 126 | Meteorologist |
| 127 | Millwright |
| 138 | Motorcycle Repairman |
| 147 | Parachute Repairman |
| 152 | Photographer |
| 154 | Photographic Darkroom Man |
| 159 | Photo Radio Operator |
| 164 | Plumber |
| 165 | Lineman Power Supplies |
| 166 | Powerman |
| 168 | Printer |
| 170 | Engineering Aide (Designated Field) |
| 174 | Radio Repairman |
| 177 | Radio Operator |
| 178 | Radio Engineer (Technician) |
| 182 | High Voltage Lineman |
| 184 | Substation Operator |
| 186 | Receiving or Shipping Checker |
| 188 | Duty Soldier II |
| 189 | Rigger |
| 190 | Riveter Pneumatic |
| 193 | Salvage Inspector |
| 194 | Salvage Technician |
| 196 | Sanitary Technician |
| 200 | Sewing Machine Operator |
| 201 | Sheet Metal Worker |
| 204 | Shoe Repairman |
| 212 | Statistical Clerk |
| 213 | Stenographer |
| 218 | Electrical Engineer |
| 219 | Mechanical Engineer |
| 222 | Student Civil Engineering |
| 223 | Student Electrical Engineering |
| 227 | Surveyor |
| 228 | Survey and Instrument Man |
| 230 | Surveyor Topographic |
| 231 | Switchboard Installer Telephone and Telegraph |
| 232 | Switchboard Installer Repairman, Manual |
| 234 | Tailor |
| 236 | Telegraph Operator |
| 237 | Teletype Operator |
| 238 | Lineman/Repairs Telephone and Telegraph |
| 239 | Teletype Mechanic |
| 240 | Tire Rebuilder |
| 241 | Toolmaker |
| 242 | Toolroom Keeper |
| 243 | Geodetic Computer |
| 244 | Tractor Driver |
| 245 | Truck Driver Heavy Trucks |
| 247 | Typist |
| 248 | Upholsterer |
| 250 | Veterinary Technician |
| 252 | Foreman Warehouse (Parts & Supplies) |
| 256 | Welder Combination |
| 258 | Substation Electrician |
| 261 | Wire Chief Telephone and Telegraph |
| 262 | Occupational Counselor |
| 263 | Psychiatric Social Worker |
| 264 | X-Ray Technician |
| 266 | Dispatch Clerk Crew |
| 267 | Translator |
| 268 | Accountant |
| 273 | Army Air Force Airplane Pilot |
| 274 | Writer Military Subjects |
| 275 | Classification Specialist |
| 280 | Court Reporter |
| 282 | Office Machine Serviceman |
| 283 | Athletic Instructor (PT) |
| 285 | Cameraman for Automated Motion Picture |
| 289 | Personnel Consultant Assistant |
| 290 | Personnel Technician |
| 294 | Industrial Engineer |
| 295 | Electrician Airplane |
| 299 | Groundman Telephone and Telegraph |
| 300 | Telephone Operator |
| 302 | Machine Operator for Designated Machinery |
| 303 | Hospital Orderly |
| 305 | Metallurgist |
| 306 | Geographer |
| 308 | Stenotype Operator |
| 309 | Telephone Operator |
| 310 | Concrete Mixer Operator |
| 312 | Mathematician |
| 316 | Automobile Repairman (Serviceman) |
| 319 | Construction Equipment Mechanic |
| 320 | Interpreter |
| 322 | Refrigeration Mechanic (Cooling Devices) |
| 323 | Stock Record Clerk |
| 324 | Stock Clerk |
| 328 | Stock Room Clerk |
| 330 | Aeronautical Engineer |
| 336 | Student/Trainee Business or Public Administration |
| 337 | Foreman Auto Repair Shop |
| 338 | Instrument Repairman Electrical |
| 341 | Shop Maintenance Mechanic |
| 342 | Master Mechanic |
| 344 | Chauffeur |
| 345 | Truck Driver Light Trucks |
| 348 | Parts Clerk Automotive |
| 350 | Bookkeeper General |
| 351 | Bookkeeping Machine Operator |
| 355 | File Clerk |
| 356 | Foreman Labor |
| 360 | Hoist Operator (Fireman) |
| 362 | Locksmith |
| 365 | Optician |
| 367 | Oven Fireman |
| 368 | Personnel Clerk |
| 369 | Manager Production |
| 371 | Purchasing Agent |
| 374 | Stock Control Clerk |
| 377 | Tracer (Drawings) |
| 378 | Motorcyclist |
| 379 | Traffic Rate Clerk |
| 381 | Watch and Clock Maker |
| 383 | Fire Fighter |
| 384 | Installer Toll Telephone and Telegraph |
| 387 | Cartographer |
| 388 | Physicist |
| 390 | Auditor (Stock Takes) |
| 392 | Student Drafting |
| 397 | Student Mechanics |
| 399 | Reporter |
| 401 | High Voltage Cable Splicer |
| 403 | Telephone Inspector |
| 404 | Army Air Force Airplane Engine Service Mechanic |
| 405 | Clerk-Typist |
| 408 | Army Air Force Airport Control Operator |
| 409 | Medical Technician |
| 410 | Dispatcher Motor Vehicle |
| 411 | Chemical Laboratory Technician |
| 412 | Engine Specialist Machinist Automotive |
| 413 | Motor Inspector |
| 414 | Carburetor Specialist |
| 431 | Machinist Helper |
| 448 | Student/Trainee Geography |
| 457 | Shop Clerk |
| 501 | Administrative and Technical Clerk |
| 502 | Administrative Noncommissioned Officer |
| 503 | Liaison Agent |
| 505 | Ammunition NCO |
| 506 | Portable Power Generator Repairman |
| 509 | Enlisted Bombardier |
| 510 | Information Center Operator |
| 511 | Armorer |
| 513 | Army Air Force Airplane Inspector |
| 514 | Army Air Force Radar Crewman (Designated Set) |
| 518 | Ground Aircraft Observer |
| 521 | Basic Soldier |
| 521 | Army Air Force Airman Basic |
| 522 | Duty Soldier I |
| 528 | Army Air Force Aircraft Hydraulic Mechanic |
| 529 | Wrecker Crewman or Operator |
| 530 | Salvage Repair NCO |
| 533 | Demolition Specialist |
| 534 | Chaplain's Assistant |
| 537 | Chief Switchboard Operator Local Battery |
| 538 | Voice Interpreter (Designated Language) |
| 540 | Chief Switchboard Operator Common Battery |
| 542 | Communications Chief |
| 543 | Radio Intelligence Control Chief |
| 545 | Chief Telegraph Inspector / Chief Telegraph Operator |
| 548 | Army Air Force Fabric and Dope Mechanic |
| 550 | Army Air Force Airplane Woodworker |
| 552 | Army Air Force Army Control Tower Operator |
| 553 | Army Air Force Airplane Electrical Shop Chief |
| 555 | Army Air Force Aircraft Sheet Metal Worker |
| 558 | Army Air Force Airplane Instrument Shop Chief |
| 566 | Duty NCO |
| 573 | Army Air Force Welder |
| 574 | Army Air Force Bombsight and Automatic Pilot Repairman |
| 575 | Army Air Force Remote Control Turret Repairman |
| 582 | Army Air Force Aerial Mine Technician |
| 583 | Engineer Supply Technician |
| 585 | First Sergeant |
| 590 | Duty Soldier III |
| 590 | Laborer |
| 591 | Foreman Fumigation and Bath |
| 593 | Army Air Force Link Trainer Repairman |
| 595 | Field Wire Chief |
| 604 | Platoon Sergeant (Army & Airborne) |
| 604 | Army Air Force Light Machine Gunner |
| 605 | Army Air Force Heavy Machine Gunner |
| 606 | Antiaircraft Machine Gunner |
| 609 | Leather and Canvas Worker |
| 611 | Army Air Force Aerial Gunner |
| 612 | Army Air Force Airplane Armorer / Gunner |
| 613 | Computer (Calculations) |
| 620 | Parachute Rigger and Repairman |
| 622 | Finance Technical Clerk |
| 623 | Finance Clerk-Typist |
| 624 | Finance Clerk |
| 625 | Officer Candidate |
| 628 | Senior Technical Instructor |
| 631 | Intelligence NCO |
| 636 | Intelligence Observer |
| 638 | Telephone Equipment Installer - Repairman Local Battery |
| 641 | Field Lineman |
| 644 | Chief Field Linesman |
| 647 | Army Air Force Radio Repairman Aircraft Equipment |
| 648 | Radio Repairman |
| 649 | Radio Repairman Fixed Station |
| 650 | Telephone Switchboard Operator |
| 652 | Army Air Force Section Leader |
| 653 | Army Air Force Squad Leader |
| 655 | Listener Sound Locator |
| 657 | Medical Aidman |
| 658 | Army Air Force Link Trainer Instructor |
| 659 | Instructor (Designated Subject) |
| 664 | Armament Inspector |
| 666 | First-Aid Man |
| 667 | Message Center Clerk |
| 668 | Truckmaster |
| 673 | Medical NCO |
| 674 | Message Center Chief |
| 675 | Messenger |
| 676 | Messenger Dispatcher (Runner) |
| 677 | Military Policeman |
| 678 | Army Air Force Power Turret and Gunsight Mechanic |
| 681 | Army Air Force Power Turret and Gunsight Repairman |
| 683 | Army Air Force Bombsight Mechanic |
| 684 | Army Air Force Airplane Power Plant Mechanic |
| 685 | Army Air Force Airplane Electrical Mechanic, Specialist |
| 686 | Army Air Force Airplane Instrument Mechanic, Specialis |
| 687 | Army Air Force Airplane Propeller Mechanic |
| 687 | Message Center Clerk |
| 689 | Army Air Force Airplane Cable Mechanic |
| 691 | Army Air Force Flexible Gunnery Trainer Operator Mechanic |
| 693 | Army Air Force Instrument Observer |
| 696 | Ambulance Orderly |
| 706 | Fumigation and Bathman |
| 707 | Radio Operator |
| 714 | Mine Supply Maintenance Technician |
| 725 | Plotter |
| 729 | Pioneer |
| 737 | Army Air Force Flight Engineer |
| 740 | Radio Operator Intermediate Speed |
| 741 | Telephone Operator Common Battery |
| 745 | Army Rifleman - NCO |
| 747 | Army Air Force Airplane and Engine Mechanic |
| 748 | Army Airplane Mechanic / Gunner / Flight Engineer |
| 749 | Army Airplane Engine Mechanic |
| 749 | Army Airplane Engine Mechanic (Inspection and Maintenance) |
| 750 | Army Air Force Airplane Maintenance Technician / Airplane Crew Chief |
| 751 | Army Air Force Airplane Flight Chief |
| 751 | Army Air Forces Radio Mechanic |
| 754 | Army Air Force Radio Mechanic |
| 755 | Army Air Force Radio Operator |
| 756 | Army Air Force Radio Operator / Mechanic) |
| 757 | Army Air Force Radio Operator / Mechanic Gunner |
| 759 | Radio Operator, CNS |
| 760 | Radio Operator, AACS |
| 762 | Army Air Force Airplane Engine Repairman (Depot Overhaul) |
| 762 | Army Air Force Airplane Engine Mechanic (Inspection and Maintenance) |
| 764 | Signal Noncommissioned Officer |
| 766 | Radio Operator High Speed (Manual Control) |
| 768 | Control Center Technician |
| 770 | Army Air Force Airplane Pilot |
| 775 | Radar Mechanic Ground Equipment (Designated Set) |
| 776 | Radio Operator Low Speed |
| 777 | Radio Operator Fixed Station |
| 784 | Weather Observer |
| 786 | Toxic Gas Handler |
| 787 | Weather Forecaster |
| 789 | Meteorological Plotter |
| 790 | Weather Observer / Teletype Technician |
| 791 | Army Air Force Air Operations Specialist |
| 792 | Radio Repairman Single Channel Teletype |
| 803 | Bugler |
| 804 | Camouflage Technician |
| 805 | Cryptographic Technician |
| 806 | Code Clerk |
| 807 | Cryptographer (Code Compiler) |
| 808 | Cryptoanalysis Technician |
| 809 | Decontaminating Equipment Operator |
| 812 | Heavy Weapons Noncommissioned Officer |
| 813 | Transportation NCO's |
| 814 | Operations NCO's |
| 818 | Railway Transportation Noncommissioned Officer |
| 819 | Commissary Steward |
| 820 | Subsistence Noncommissioned Officer |
| 821 | Quartermaster Supply Technician |
| 822 | Utilities NCO |
| 824 | Mess Sergeant |
| 825 | Medical Supply NCO |
| 826 | Army Air Forces Supply Technician |
| 835 | Supply Clerk |
| 848 | Parts Clerk Armament |
| 852 | Radar Mechanic RCM |
| 853 | Radar Mechanic Navigation |
| 854 | Radar Mechanic Sea Search |
| 855 | Dental Technician |
| 856 | Radar Mechanic Sea Search (LAB) |
| 858 | Medical Laboratory Technician |
| 859 | Pharmacy Technician |
| 861 | Surgical Technician |
| 862 | Radar Mechanic IFF (LORAN) |
| 863 | Radar Mechanic GCA |
| 866 | Radar Observer Sea Search |
| 867 | Radar Mechanic Bombardment |
| 868 | Radio--Teletype Mechanic |
| 869 | DF Evaluator |
| 870 | Chemical Noncommissioned Officer |
| 877 | Radio Message Procedure Instructor |
| 878 | Field Radio Communications Instructor |
| 884 | Radio Observer Radio Set type V |
| 885 | Radio Observer Radio Set type M |
| 886 | Radio Mechanic Radio Set type I |
| 887 | Radio Mechanic Radio Set type V |
| 888 | Radio Mechanic Radio Set type F |
| 889 | Radio Mechanic Radio Set type M |
| 901 | Munitions Worker |
| 902 | Army Air Force Weapons Mechanic Aircraft |
| 903 | Small-Arms Weapons Mechanic |
| 905 | Mechanic Engine Wheeled Vehicle |
| 906 | Mechanic Chassis Wheel Vehicle |
| 909 | Mechanic Engine Track Vehicle |
| 911 | Army Air Force Airplane Armorer |
| 912 | Electrician Automotive |
| 928 | Automotive Equipment Mechanic |
| 929 | Automotive Equipment Operator |
| 930 | Chief Automotive Equipment Mechanic |
| 931 | Truck Driver Heavy Trucks |
| 932 | Special Vehicle Operator (Light - Heavy Truck Driver) |
| 933 | Instrument Landing Equipment Mechanic |
| 938 | AAF Gunnery Instructor |
| 939 | Army Air Force Aerial Photographer Gunner |
| 940 | Army Air Force Aerial Photographer |
| 941 | Camera Technician |
| 945 | Photography Laboratory Technician |
| 947 | Signal Communications Instructor |
| 948 | Radar Mechanic Ground LORAN |
| 949 | Ammunition Renovator |
| 950 | Wire Repairman VHF |
| 955 | Army Air Force Radar Repairman Airborne Equipment (Designated Set) |
| 957 | Army Air Force Airplane Electrical Instrument Mechanic |
| 965 | Mechanic Automotive - Wheel Vehicle (Third Echelon) |
| 966 | Mechanic Automotive - Track Vehicle (Third Echelon) |
| 967 | Army Air Force Air Transportation Technician |
| 969 | Synthetic Trainer Mechanic (Designated Type) |
| 970 | Synthetic Trainer Operator Instructor |
| 974 | Radar Repairman for Designated Models AN/TPT |
| 977 | Radio Security Technician |
| 979 | Chemical Warfare Man |
As mentioned before: this list is nowhere near complete and is subject to further research
Sources:
The US Army Technical Manuals as mentioned in the US Manual Database on this website
Various Discharge Papers (from Personal Collections & Collectors) - Veteran's Recollections
Special Thanks to T.J. Williams & B.J. Gotham's publication 'We went to War' ISBN 0-9672447-3-0
