| Able Seaman | Abrasive Grader | Abrasive Grinder |
| Abrasive Mixer | Abrasive Sawyer | Abrasive-band Winder |
| Abrasive-coating-machine Operator | Abrasive-grader Helper | Abrasive-mixer Helper |
| Abrasive-wheel Molder | Absorption Operator | Absorption-and-adsorption Engineer |
| Abstractor | Academic Dean | Accelerator Operator |
| Access Coordinator, Cable Television | Accident-prevention-squad Police Officer | Accordion Maker |
| Accordion Repairer | Accordion Tuner | Account Executive |
| Account-information Clerk | Accountant | Accountant, Budget |
| Accountant, Cost | Accountant, Property | Accountant, Systems |
| Accountant, Tax | Accounting Clerk | Accounts-adjustable Clerk |
| Acetone-button Paster | Acetone-recovery Worker | Acetylene-cylinder-packing Mixer |
| Acetylene-plant Operator | Acid Extractor | Acid Maker |
| Acid Purifier | Acid Supervisor | Acid-plant Helper |
| Acid-polymerization Operator | Acid-tank Liner | Acoustical Carpenter |
| Acquisitions Librarian | Acrobat | Acrobatic Rigger |
| Actor | Actuary | Acupressurist |
| Acupuncturist | Addresser | Addressing-machine Operator |
| Adhesive Primer | Adhesive-bandage-machine Operator | Adjudicator |
| Adjuster | Adjuster, Alarm Mechanism | Admeasurer |
| Administrative Assistant | Administrative Clerk | Administrative Secretary |
| Administrator, Health Care Facility | Administrator, Social Welfare | Admissions Evaluator |
| Admitting Officer | Advance Agent | Advertising Clerk |
| Advertising-dispatch Clerk | Advertising-material Distributor | Advertising-space Clerk |
| Adzing-and-boring-machine Operator | Aerial-photograph Interpreter | Aerial-tram Operator |
| Aerialist | Aerodynamicist | Aeronautical Engineer |
| Aeronautical Project Engineer | Aeronautical Test Engineer | Aeronautical-design Engineer |
| Aeronautical-research Engineer | Aerospace Physiological Technician | Agate Setter |
| Agent-contract Clerk | Agent-licensing Clerk | Ager Operator |
| Aging-department Supervisor | Agricultural Engineer | Agricultural-chemicals Inspector |
| Agricultural-engineering Technician | Agricultural-research Engineer | Agronomist |
| Air Analyst | Air And Hydronic Balancing Technician | Air Purifier Servicer |
| Air-and-water Filler | Air-bag Curer | Air-compressor Mechanic |
| Air-compressor Operator | Air-conditioning Installer-servicer Helper, Window Unit | Air-conditioning Installer-servicer, Window Unit |
| Air-conditioning Mechanic | Air-conditioning-coil Assembler | Air-conditioning-unit Tester |
| Air-drier-machine Operator | Air-hole Driller | Air-table Operator |
| Air-traffic Coordinator | Air-traffic-control Specialist, Station | Air-traffic-control Specialist, Tower |
| Air-valve Repairer | Airborne Sensor Specialist | Airbrush Artist |
| Aircraft Body Repairer | Aircraft Launch And Recovery Technician | Aircraft Mechanic, Armament |
| Aircraft Mechanic, Electrical And Radio | Aircraft Mechanic, Environmental Control System | Aircraft Mechanic, Plumbing And Hydraulics |
| Aircraft Mechanic, Rigging And Controls | Aircraft Skin Burnisher | Aircraft-armament Mechanic |
| Aircraft-log Clerk | Aircraft-photographic-equipment Mechanic | Aircraft-shipping Checker |
| Airframe-and-power-plant Mechanic | Airframe-and-power-plant-mechanic Apprentice | Airframe-and-power-plant-mechanic Helper |
| Airline Security Representative | Airline-radio Operator | Airline-radio Operator, Chief |
| Airplane Coverer | Airplane Inspector | Airplane Pilot |
| Airplane Pilot, Commercial | Airplane Pilot, Photogrammetry | Airplane-charter Clerk |
| Airplane-dispatch Clerk | Airplane-flight Attendant | Airplane-gas-tank-liner Assembler |
| Airplane-pilot Helper | Airport Attendant | Airport Electrician |
| Airport Engineer | Airport Utility Worker | Airport-maintenance Chief |
| Alarm Investigator | Alarm Operator | Alcohol-and-drug-abuse-assistance Program Administrator |
| Aligner, Barrel And Receiver | Aligner, Typewriter | Allergist-immunologist |
| Almond Blancher, Hand | Almond Huller | Almond-blancher Operator |
| Almond-cutting-machine Tender | Almond-paste Mixer | Almond-paste Molder |
| Alodize-machine Helper | Alodize-machine Operator | Alteration Tailor |
| Alterations Workroom Clerk | Alum-plant Operator | Alumina-plant Supervisor |
| Aluminum-hydroxide-process Operator | Aluminum-pool Installer | Alumni Secretary |
| Amalgamator | Ambulance Attendant | Ambulance Driver |
| Ammonia-still Operator | Ammonium-nitrate Crystallizer | Amphibian Crewmember |
| Ampoule Examiner | Ampoule Filler | Ampoule Sealer |
| Ampoule-washing-machine Operator | Amusement Park Entertainer | Amusement Park Worker |
| Analyst, Food And Beverage | Anatomist | Anesthesiologist |
| Angle Shear Operator | Animal Breeder | Animal Caretaker |
| Animal Eviscerator | Animal Keeper | Animal Keeper, Head |
| Animal Scientist | Animal Trainer | Animal Treatment Investigator |
| Animal-hospital Clerk | Animal-nursery Worker | Animal-ride Attendant |
| Animal-ride Manager | Animal-shelter Clerk | Ankle-patch Molder |
| Annealer | Announcer | Anode Builder |
| Anode Rebuilder | Anode-crew Supervisor | Anodizer |
| Antenna Installer | Antenna Installer, Satellite Communications | Anthropologist |
| Anthropologist, Physical | Antichecking-iron Worker | Antisqueak Filler |
| Antitank Assault Gunner | Anvil-seating-press Operator | Apiculturist |
| Apparel-rental Clerk | Appeals Referee | Appeals Reviewer, Veteran |
| Apple-packing Header | Appliance Assembler, Line | Appliance-service Supervisor |
| Applications Engineer, Manufacturing | Appliquer, Zigzag | Appointment Clerk |
| Appraiser | Appraiser, Art | Appraiser, Automobile Damage |
| Appraiser, Real Estate | Apprenticeship Consultant | Apron Cleaner |
| Aquarist | Aquatic Biologist | Aquatic Performer |
| Arbitrator | Arbor-press Operator I | Arborer |
| Arc Cutter | Arch-cushion-press Operator | Arch-cushion-skiving-machine Operator |
| Arch-support Technician | Archeologist | Architect |
| Architect, Marine | Archivist | Area Supervisor, Retail Chain Store |
| Armature-winder Helper, Repair | Armhole Baster, Jumpbasting | Armhole Feller, Handstitching Machine |
| Armhole-sew-and-trim Operator, Lockstitch | Armor Reconnaissance Specialist | Armored-car Guard |
| Armored-car Guard And Driver | Armorer Technician | Armoring-machine Operator |
| Arranger | Arrowsmith | Art Conservator |
| Art Director | Art Therapist | Artificial Inseminator |
| Artificial-breeding Distributor | Artificial-breeding Technician | Artificial-candy Maker |
| Artificial-flower Maker | Artificial-foliage Arranger | Artificial-glass-eye Maker |
| Artificial-log-machine Operator | Artificial-pearl Maker | Artificial-plastic-eye Maker |
| Artillery Or Naval Gunfire Observer | Artillery-maintenance Supervisor | Artist And Repertoire Manager |
| Artist's Manager | Artist, Mannequin Coloring | Artist, Suspect |
| Asbestos Removal Worker | Asbestos-shingle Inspector | Asbestos-shingle Shearing-machine Operator |
| Asbestos-wire Finisher | Asphalt-distributor Tender | Asphalt-heater Tender |
| Asphalt-paving-machine Operator | Assayer | Assembler |
| Assembler And Tester, Electronics | Assembler And Wirer, Industrial Equipment | Assembler For Puller-over, Hand |
| Assembler For Puller-over, Machine | Assembler Helper, Internal Combustion Engine | Assembler I |
| Assembler Ii | Assembler, Aircraft Power Plant | Assembler, Aircraft, Structures And Surfaces |
| Assembler, Aluminum Boats | Assembler, Bicycle I | Assembler, Bicycle Ii |
| Assembler, Billiard-table | Assembler, Camper | Assembler, Carbon Brushes |
| Assembler, Clip-on Sunglasses | Assembler, Component | Assembler, Corncob Pipes |
| Assembler, Deck And Hull | Assembler, Electromechanical | Assembler, Faucets |
| Assembler, Filters | Assembler, Finger Buffs | Assembler, Fishing Floats |
| Assembler, Garment Form | Assembler, Gold Frame | Assembler, Ground Support Equipment |
| Assembler, Igniter | Assembler, Insulation And Flooring | Assembler, Internal Combustion Engine |
| Assembler, Lay-ups | Assembler, Leather Goods I | Assembler, Leather Goods Ii |
| Assembler, Liquid Center | Assembler, Marking Devices | Assembler, Mechanical Ordnance |
| Assembler, Mechanical Pencils And Ballpoint Pens | Assembler, Metal Bonding | Assembler, Metal Building |
| Assembler, Metal Furniture | Assembler, Mining Machinery | Assembler, Molded Frames |
| Assembler, Motor Vehicle | Assembler, Movement | Assembler, Musical Instruments |
| Assembler, Photographic Equipment | Assembler, Piano | Assembler, Ping-pong Table |
| Assembler, Plastic Hospital Products | Assembler, Printed Products | Assembler, Product |
| Assembler, Production | Assembler, Production Line | Assembler, Sandal Parts |
| Assembler, Skylights | Assembler, Small Products I | Assembler, Small Products Ii |
| Assembler, Steam-and-gas Turbine | Assembler, Subassembly | Assembler, Surgical Garment |
| Assembler, Tubing | Assembler, Type-bar-and-segment | Assembler, Unit |
| Assembler, Watch Train | Assembler, Wet Wash | Assembler, Wire-mesh Gate |
| Assembler-and-gluer, Laminated Plastics | Assembler-arranger | Assembler-installer, General |
| Assembly Adjuster | Assembly Cleaner | Assembly Inspector |
| Assembly Loader | Assembly Operator | Assembly Repairer |
| Assembly Supervisor | Assembly Technician | Assembly-inspector Helper |
| Assembly-line Inspector | Assembly-machine Operator | Assembly-machine Tender |
| Assembly-machine-set-up Mechanic | Assembly-press Operator | Assessor-collector, Irrigation Tax |
| Assignment Clerk | Assignment Editor | Assistant Branch Manager, Financial Institution |
| Assistant Construction Superintendent | Assistant Designer | Assistant Press Operator, Offset |
| Assistant Principal | Assistant-press Operator | Association Executive |
| Assorter | Astrologer | Astronomer |
| Athletic Trainer | Atomic-fuel Assembler | Atomizer Assembler |
| Attendance Clerk | Attendance Officer | Attendant, Arcade |
| Attendant, Campground | Attendant, Children's Institution | Attendant, Lodging Facilities |
| Auction Assistant | Auction Clerk | Auctioneer |
| Audio Operator | Audiologist | Audiometrist |
| Audiovisual Librarian | Audiovisual Production Specialist | Audiovisual Technician |
| Audit Clerk | Audit-machine Operator | Auditor |
| Auditor, County Or City | Auditor, Data Processing | Auditor, Internal |
| Auditor, Tax | Auger Press Operator, Manual Control | Auto Roller |
| Auto-body Repairer, Fiberglass | Auto-design Checker | Auto-design Detailer |
| Autoclave Operator | Autoclave Operator I | Autoclave Operator Ii |
| Automat-car Attendant | Automated Cutting Machine Operator | Automated Equipment Engineer-technician |
| Automatic Bandsaw Tender | Automatic Casting-forging Machine Operator | Automatic Lump Making Machine Tender |
| Automatic Pattern Edger | Automatic Stacker | Automatic-door Mechanic |
| Automatic-equipment Technician | Automatic-machine Attendant | Automatic-nailing-machine Feeder |
| Automatic-pad-making-machine Operator | Automatic-pad-making-machine Operator Helper | Automatic-wheel-line Operator |
| Automatic-window-seat-and-top-lift Repairer | Automobile Detailer | Automobile Locator |
| Automobile Mechanic | Automobile Racer | Automobile Rental Clerk |
| Automobile Tester | Automobile Upholsterer | Automobile Wrecker |
| Automobile-accessories Installer | Automobile-body Customizer | Automobile-body Repairer |
| Automobile-body-repairer Helper | Automobile-bumper Straightener | Automobile-club-safety-program Coordinator |
| Automobile-mechanic Apprentice | Automobile-mechanic Helper | Automobile-radiator Mechanic |
| Automobile-repair-service Estimator | Automobile-seat-cover Installer | Automobile-seat-cover-and-convertible-top Installer |
| Automobile-self-serve-service-station Attendant | Automobile-service-station Attendant | Automobile-service-station Mechanic |
| Automobile-upholsterer Apprentice | Automotive Engineer | Automotive Technician, Exhaust Emissions |
| Automotive-cooling-system Diagnostic Technician | Automotive-generator-and-starter Repairer | Automotive-maintenance-equipment Servicer |
| Automotive-tire Tester | Automotive-tire-testing Supervisor | Auxiliary-equipment Operator |
| Auxiliary-equipment Tender | Aviation Support Equipment Repairer | Avionics Technician |
| Awning Hanger | Awning Maker-and-installer | Awning-frame Maker |
| Awning-hanger Helper |
