| 1,2-Dichloropropane |
| 1,3-Butadiene |
| 1-(2-Chloroethyl)-3-(4-methylcyclohexyl)-1-nitrosourea (Methyl-CCNU) (Semustine) |
| 2,3,4,7,8-Pentachlorodibenzofuran |
| 2,3,7,8-Tetrachlorodibenzo-para-dioxin |
| 2-Naphthylamine |
| 3,3’,4,4’,5-Pentachlorobiphenyl (PCB-126) |
| 4,4'-Methylenebis(2-chloroaniline) (MOCA) |
| 4-Aminobiphenyl |
| Acetaldehyde associated with consumption of alcoholic beverages |
| Acheson process, occupational exposure associated with |
| Acid mists, strong inorganic |
| Acrylonitrile |
| Aflatoxins |
| Alcoholic beverages |
| Aluminium production |
| Areca nut |
| Aristolochic acid |
| Aristolochic acid, plants containing |
| Arsenic and inorganic arsenic compounds |
| Asbestos (all forms, including actinolite, amosite, anthophyllite, chrysotile, crocidolite, tremolite) |
| Auramine production |
| Azathioprine |
| Benzene |
| Benzidine |
| Benzidine, dyes metabolized to |
| Benzo[a]pyrene |
| Beryllium and beryllium compounds |
| Betel quid with tobacco |
| Betel quid without tobacco |
| Bis(chloromethyl)ether; chloromethyl methyl ether (technical-grade) |
| Busulfan |
| Cadmium and cadmium compounds |
| Chlorambucil |
| Chlornaphazine |
| Chromium (VI) compounds |
| Clonorchis sinensis (infection with) |
| Coal gasification |
| Coal, indoor emissions from household combustion of |
| Coal-tar distillation |
| Coal-tar pitch |
| Coke production |
| Cyclophosphamide |
| Cyclosporine |
| Diethylstilbestrol |
| Engine exhaust, diesel |
| Epstein-Barr virus |
| Erionite |
| Estrogen therapy, postmenopausal |
| Estrogen-progestogen menopausal therapy (combined) |
| Estrogen-progestogen oral contraceptives (combined) |
| Ethanol in alcoholic beverages |
| Ethylene oxide |
| Etoposide |
| Etoposide in combination with cisplatin and bleomycin |
| Firefighter (occupational exposure as a) |
| Fission products, including strontium-90 |
| Fluoro-edenite fibrous amphibole |
| Formaldehyde |
| Haematite mining (underground) |
| Helicobacter pylori (infection with) |
| Hepatitis B virus (chronic infection with) |
| Hepatitis C virus (chronic infection with) |
| Human immunodeficiency virus type 1 (infection with) |
| Human papillomavirus (HPV) type 16 |
| Human papillomavirus (HPV) type 18 |
| Human papillomavirus (HPV) type 33 |
| Human papillomavirus (HPV) types 31, 35, 39, 45, 51, 52, 56, 58, 59 |
| Human T-cell lymphotropic virus type I |
| Ionizing radiation (all types) |
| Iron and steel founding (occupational exposure during) |
| Isopropyl alcohol manufacture using strong acids |
| Kaposi sarcoma herpesvirus |
| Leather dust |
| Lindane (see also Hexachlorocyclohexanes) |
| Magenta production |
| Melphalan |
| Methoxsalen (8-methoxypsoralen) plus ultraviolet A radiation |
| Mineral oils, untreated or mildly treated |
| MOPP and other combined chemotherapy including alkylating agents |
| N'-Nitrosonornicotine (NNN) and 4-(N-Nitrosomethylamino)-1-(3-pyridyl)-1-butanone (NNK) |
| Neutron radiation |
| Nickel compounds |
| Opisthorchis viverrini (infection with) |
| Opium consumption |
| ortho-Toluidine |
| Outdoor air pollution |
| Outdoor air pollution, particulate matter in |
| Painter (occupational exposure as a) |
| Pentachlorophenol (see also Polychlorophenols) |
| Perfluorooctanoic acid (PFOA) |
| Phenacetin |
| Phenacetin, analgesic mixtures containing |
| Phosphorus-32, as phosphate |
| Plutonium |
| Polychlorinated biphenyls |
| Polychlorinated biphenyls, dioxin-like, with a Toxicity Equivalency Factor (TEF) |
| Processed meat (consumption of) |
| Radioiodines, including iodine-131 |
| Radionuclides, alpha-particle-emitting, internally deposited |
| Radionuclides, beta-particle-emitting, internally deposited |
| Radium-224 and its decay products |
| Radium-226 and its decay products |
| Radium-228 and its decay products |
| Radon-222 and its decay products |
| Rubber manufacturing industry |
| Salted fish, Chinese-style |
| Schistosoma haematobium (infection with) |
| Shale oils |
| Silica dust, crystalline, in the form of quartz or cristobalite |
| Solar radiation (see Ultraviolet radiation (wavelengths 100–400 nm |
| Soot (as found in occupational exposure of chimney sweeps) |
| Sulfur mustard |
| Tamoxifen |
| Thiotepa |
| Thorium-232 and its decay products |
| Tobacco smoke, secondhand |
| Tobacco smoking |
| Tobacco, smokeless |
| Treosulfan |
| Trichloroethylene |
| Ultraviolet radiation (wavelengths 100–400 nm, encompassing UVA, UVB, and UVC) |
| Ultraviolet radiation from welding (see Ultraviolet radiation (wavelengths 100–400 nm |
| Ultraviolet-emitting tanning devices (see Ultraviolet radiation (wavelengths 100–400 nm |
| Uranium, mixture of isotopes (see Radionuclides, alpha-particle-emitting, internally deposited) |
| Vinyl chloride |
| Welding fumes |
| Wood dust |
| X- and Gamma-Radiation |