These are the main headings used to classify the type of development assistance by the Development Assistance Committee of the OECD (Organisation for Economic Cooperation and Development).
While many projects have numerous sector codes, usually only the main ones are listed.
| 110 | EDUCATION |
| 111 | EDUCATION |
| 112 | BASIC EDUCATION |
| 113 | SECONDARY EDUCATION |
| 114 | POST-SECONDARY EDUCATION |
| 120 | HEALTH |
| 121 | HEALTH |
| 122 | BASIC HEALTH |
| 130 | POPULATION POLICIES/PROGRAMMES AND REPRODUCTIVE HEALTH |
| 140 | WATER SUPPLY AND SANITATION |
| 150 | GOVERNMENT AND CIVIL SOCIETY |
| 151 | GOVERNMENT AND CIVIL SOCIETY |
| 152 | CONFLICT PREVENTION AND RESOLUTION |
| 160 | OTHER SOCIAL INFRASTRUCTURE AND SERVICES |
| 210 | TRANSPORT AND STORAGE |
| 220 | COMMUNICATIONS |
| 230 | ENERGY GENERATION AND SUPPLY |
| 240 | BANKING AND FINANCIAL SERVICES |
| 250 | BUSINESS AND OTHER SERVICES |
| 311 | AGRICULTURE |
| 312 | FORESTRY |
| 313 | FISHING |
| 321 | INDUSTRY |
| 322 | MINERAL RESOURCES AND MINING |
| 323 | CONSTRUCTION |
| 331 | TRADE POLICY AND REGULATIONS AND TRADE-RELATED ADJUSTMENT |
| 332 | TOURISM |
| 400 | MULTISECTOR/CROSS-CUTTING |
| 410 | GENERAL ENVIRONMENTAL PROTECTION |
| 430 | OTHER MULTISECTOR |
| 500 | COMMODITY AID AND GENERAL PROGRAMME ASSISTANCE |
| 510 | GENERAL BUDGET SUPPORT |
| 520 | DEVELOPMENTAL FOOD AID/FOOD SECURITY ASSISTANCE |
| 530 | OTHER COMMODITY ASSISTANCE |
| 600 | ACTION RELATING TO DEBT |
| 700 | HUMANITARIAN AID |
| 720 | EMERGENCY RESPONSE |
| 730 | RECONSTRUCTION RELIEF AND REHABILITATION |
| 740 | DISASTER PREVENTION AND PREPAREDNESS |
| 910 | ADMINISTRATIVE COSTS OF DONORS |
| 920 | SUPPORT TO NON-GOVERNMENTAL ORGANISATIONS (NGOS) |
| 930 | REFUGEES IN DONOR COUNTRIES |
| 998 | UNALLOCATED/UNSPECIFIED |
| 11110 | EDUCATION POLICY AND ADMINISTRATIVE MANAGEMENT |
| 11120 | EDUCATION FACILITIES AND TRAINING |
| 11130 | TEACHER TRAINING |
| 11182 | EDUCATIONAL RESEARCH |
| 11220 | PRIMARY EDUCATION |
| 11230 | BASIC LIFE SKILLS FOR YOUTH AND ADULTS |
| 11240 | EARLY CHILDHOOD EDUCATION |
| 11320 | SECONDARY EDUCATION |
| 11330 | VOCATIONAL TRAINING |
| 11420 | HIGHER EDUCATION |
| 11430 | ADVANCED TECHNICAL AND MANAGERIAL TRAINING |
| 12110 | HEALTH POLICY AND ADMINISTRATIVE MANAGEMENT |
| 12181 | MEDICAL EDUCATION/TRAINING |
| 12182 | MEDICAL RESEARCH |
| 12191 | MEDICAL SERVICES |
| 12220 | BASIC HEALTH CARE |
| 12230 | BASIC HEALTH INFRASTRUCTURE |
| 12240 | BASIC NUTRITION |
| 12250 | INFECTIOUS DISEASE CONTROL |
| 12261 | HEALTH EDUCATION |
| 12262 | MALARIA CONTROL |
| 12263 | TUBERCULOSIS CONTROL |
| 12281 | HEALTH PERSONNEL DEVELOPMENT |
| 13010 | POPULATION POLICY AND ADMINISTRATIVE MANAGEMENT |
| 13020 | REPRODUCTIVE HEALTH CARE |
| 13030 | FAMILY PLANNING |
| 13040 | STD CONTROL INCLUDING HIV/AIDS |
| 13081 | PERSONNEL DEVELOPMENT FOR POPULATION AND REPRODUCTIVE HEALTH |
| 14010 | WATER RESOURCES POLICY AND ADMINISTRATIVE MANAGEMENT |
| 14015 | WATER RESOURCES PROTECTION |
| 14020 | WATER SUPPLY AND SANITATION - LARGE SYSTEMS |
| 14030 | BASIC DRINKING WATER SUPPLY AND BASIC SANITATION |
| 14040 | RIVER DEVELOPMENT |
| 14050 | WASTE MANAGEMENT/DISPOSAL |
| 14081 | EDUCATION AND TRAINING IN WATER SUPPLY AND SANITATION |
| 15110 | ECONOMIC AND DEVELOPMENT POLICY/PLANNING |
| 15120 | PUBLIC SECTOR FINANCIAL MANAGEMENT |
| 15130 | LEGAL AND JUDICIAL DEVELOPMENT |
| 15140 | GOVERNMENT ADMINISTRATION |
| 15150 | STRENGTHENING CIVIL SOCIETY |
| 15161 | ELECTIONS |
| 15162 | HUMAN RIGHTS |
| 15163 | FREE FLOW OF INFORMATION |
| 15164 | WOMEN’S EQUALITY ORGANISATIONS AND INSTITUTIONS |
| 15210 | SECURITY SYSTEM MANAGEMENT AND REFORM |
| 15220 | CIVILIAN PEACE-BUILDING |
| 15230 | POST-CONFLICT PEACE-BUILDING (UN) |
| 15240 | REINTEGRATION AND SALW CONTROL |
| 15250 | LAND MINE CLEARANCE |
| 15261 | CHILD SOLDIERS (PREVENTION AND DEMOBILISATION) |
| 16010 | SOCIAL/ WELFARE SERVICES |
| 16020 | EMPLOYMENT POLICY AND ADMINISTRATIVE MANAGEMENT |
| 16030 | HOUSING POLICY AND ADMINISTRATIVE MANAGEMENT |
| 16040 | LOW-COST HOUSING |
| 16050 | MULTISECTOR AID FOR BASIC SOCIAL SERVICES |
| 16061 | CULTURE AND RECREATION |
| 16062 | STATISTICAL CAPACITY BUILDING |
| 16063 | NARCOTICS CONTROL |
| 16064 | SOCIAL MITIGATION OF HIV/AIDS |
| 21010 | TRANSPORT POLICY AND ADMINISTRATIVE MANAGEMENT |
| 21020 | ROAD TRANSPORT |
| 21030 | RAIL TRANSPORT |
| 21040 | WATER TRANSPORT |
| 21050 | AIR TRANSPORT |
| 21061 | STORAGE |
| 21081 | EDUCATION AND TRAINING IN TRANSPORT AND STORAGE |
| 22010 | COMMUNICATIONS POLICY AND ADMINISTRATIVE MANAGEMENT |
| 22020 | TELECOMMUNICATIONS |
| 22030 | RADIO/TELEVISION/PRINT MEDIA |
| 22040 | INFORMATION AND COMMUNICATION TECHNOLOGY (ICT) |
| 23010 | ENERGY POLICY AND ADMINISTRATIVE MANAGEMENT |
| 23020 | POWER GENERATION/NON-RENEWABLE SOURCES |
| 23030 | POWER GENERATION/RENEWABLE SOURCES |
| 23040 | ELECTRICAL TRANSMISSION/ DISTRIBUTION |
| 23050 | GAS DISTRIBUTION |
| 23061 | OIL-FIRED POWER PLANTS |
| 23062 | GAS-FIRED POWER PLANTS |
| 23063 | COAL-FIRED POWER PLANTS |
| 23064 | NUCLEAR POWER PLANTS |
| 23065 | HYDRO-ELECTRIC POWER PLANTS |
| 23066 | GEOTHERMAL ENERGY |
| 23067 | SOLAR ENERGY |
| 23068 | WIND POWER |
| 23069 | OCEAN POWER |
| 23070 | BIOMASS |
| 23081 | ENERGY EDUCATION/TRAINING |
| 23082 | ENERGY RESEARCH |
| 24010 | FINANCIAL POLICY AND ADMINISTRATIVE MANAGEMENT |
| 24020 | MONETARY INSTITUTIONS |
| 24030 | FORMAL SECTOR FINANCIAL INTERMEDIARIES |
| 24040 | INFORMAL/SEMI-FORMAL FINANCIAL INTERMEDIARIES |
| 24081 | EDUCATION/TRAINING IN BANKING AND FINANCIAL SERVICES |
| 25010 | BUSINESS SUPPORT SERVICES AND INSTITUTIONS |
| 25020 | PRIVATISATION |
| 31110 | AGRICULTURAL POLICY AND ADMINISTRATIVE MANAGEMENT |
| 31120 | AGRICULTURAL DEVELOPMENT |
| 31130 | AGRICULTURAL LAND RESOURCES |
| 31140 | AGRICULTURAL WATER RESOURCES |
| 31150 | AGRICULTURAL INPUTS |
| 31161 | FOOD CROP PRODUCTION |
| 31162 | INDUSTRIAL CROPS/EXPORT CROPS |
| 31163 | LIVESTOCK |
| 31164 | AGRARIAN REFORM |
| 31165 | AGRICULTURAL ALTERNATIVE DEVELOPMENT |
| 31166 | AGRICULTURAL EXTENSION |
| 31181 | AGRICULTURAL EDUCATION/TRAINING |
| 31182 | AGRICULTURAL RESEARCH |
| 31191 | AGRICULTURAL SERVICES |
| 31192 | PLANT AND POST-HARVEST PROTECTION AND PEST CONTROL |
| 31193 | AGRICULTURAL FINANCIAL SERVICES |
| 31194 | AGRICULTURAL CO-OPERATIVES |
| 31195 | LIVESTOCK/VETERINARY SERVICES |
| 31210 | FORESTRY POLICY AND ADMINISTRATIVE MANAGEMENT |
| 31220 | FORESTRY DEVELOPMENT |
| 31261 | FUELWOOD/CHARCOAL |
| 31281 | FORESTRY EDUCATION/TRAINING |
| 31282 | FORESTRY RESEARCH |
| 31291 | FORESTRY SERVICES |
| 31310 | FISHING POLICY AND ADMINISTRATIVE MANAGEMENT |
| 31320 | FISHERY DEVELOPMENT |
| 31381 | FISHERY EDUCATION/TRAINING |
| 31382 | FISHERY RESEARCH |
| 31391 | FISHERY SERVICES |
| 32110 | INDUSTRIAL POLICY AND ADMINISTRATIVE MANAGEMENT |
| 32120 | INDUSTRIAL DEVELOPMENT |
| 32130 | SMALL AND MEDIUM-SIZED ENTERPRISES (SME) DEVELOPMENT |
| 32140 | COTTAGE INDUSTRIES AND HANDICRAFT |
| 32161 | AGRO-INDUSTRIES |
| 32162 | FOREST INDUSTRIES |
| 32163 | TEXTILES |
| 32164 | CHEMICALS |
| 32165 | FERTILIZER PLANTS |
| 32166 | CEMENT/LIME/PLASTER |
| 32167 | ENERGY MANUFACTURING |
| 32168 | PHARMACEUTICAL PRODUCTION |
| 32169 | BASIC METAL INDUSTRIES |
| 32170 | NON-FERROUS METAL INDUSTRIES |
| 32171 | ENGINEERING |
| 32172 | TRANSPORT EQUIPMENT INDUSTRY |
| 32182 | TECHNOLOGICAL RESEARCH AND DEVELOPMENT |
| 32210 | MINERAL/MINING POLICY AND ADMINISTRATIVE MANAGEMENT |
| 32220 | MINERAL PROSPECTION AND EXPLORATION |
| 32261 | COAL |
| 32262 | OIL AND GAS |
| 32263 | FERROUS METALS |
| 32264 | NONFERROUS METALS |
| 32265 | PRECIOUS METALS/MATERIALS |
| 32266 | INDUSTRIAL MINERALS |
| 32267 | FERTILIZER MINERALS |
| 32268 | OFFSHORE MINERALS |
| 32310 | CONSTRUCTION POLICY AND ADMINISTRATIVE MANAGEMENT |
| 33110 | TRADE POLICY AND ADMINISTRATIVE MANAGEMENT |
| 33120 | TRADE FACILITATION |
| 33130 | REGIONAL TRADE AGREEMENTS (RTAS) |
| 33140 | MULTILATERAL TRADE NEGOTIATIONS |
| 33150 | TRADE-RELATED ADJUSTMENT |
| 33181 | TRADE EDUCATION/TRAINING |
| 33210 | TOURISM POLICY AND ADMINISTRATIVE MANAGEMENT |
| 41010 | ENVIRONMENTAL POLICY AND ADMINISTRATIVE MANAGEMENT |
| 41020 | BIOSPHERE PROTECTION |
| 41030 | BIO-DIVERSITY |
| 41040 | SITE PRESERVATION |
| 41050 | FLOOD PREVENTION/CONTROL |
| 41081 | ENVIRONMENTAL EDUCATION/ TRAINING |
| 41082 | ENVIRONMENTAL RESEARCH |
| 43010 | MULTISECTOR AID |
| 43030 | URBAN DEVELOPMENT AND MANAGEMENT |
| 43040 | RURAL DEVELOPMENT |
| 43050 | NON-AGRICULTURAL ALTERNATIVE DEVELOPMENT |
| 43081 | MULTISECTOR EDUCATION/TRAINING |
| 43082 | RESEARCH/SCIENTIFIC INSTITUTIONS |
| 51010 | GENERAL BUDGET SUPPORT |
| 52010 | FOOD AID/FOOD SECURITY PROGRAMMES |
| 53030 | IMPORT SUPPORT (CAPITAL GOODS) |
| 53040 | IMPORT SUPPORT (COMMODITIES) |
| 60010 | ACTION RELATING TO DEBT |
| 60020 | DEBT FORGIVENESS |
| 60030 | RELIEF OF MULTILATERAL DEBT |
| 60040 | RESCHEDULING AND REFINANCING |
| 60061 | DEBT FOR DEVELOPMENT SWAP |
| 60062 | OTHER DEBT SWAP |
| 60063 | DEBT BUY-BACK |
| 72010 | MATERIAL RELIEF ASSISTANCE AND SERVICES |
| 72040 | EMERGENCY FOOD AID |
| 72050 | RELIEF CO-ORDINATION; PROTECTION AND SUPPORT SERVICES |
| 73010 | RECONSTRUCTION RELIEF AND REHABILITATION |
| 74010 | DISASTER PREVENTION AND PREPAREDNESS |
| 91010 | ADMINISTRATIVE COSTS |
| 92010 | SUPPORT TO NATIONAL NGOS |
| 92020 | SUPPORT TO INTERNATIONAL NGOS |
| 92030 | SUPPORT TO LOCAL AND REGIONAL NGOS |
| 93010 | REFUGEES IN DONOR COUNTRIES |
| 99810 | SECTORS NOT SPECIFIED |
| 99820 | PROMOTION OF DEVELOPMENT AWARENESS |