| Toxin | Associated Cancer | Notes |
| Aflatoxins | Hepatocellular carcinoma | Derived from Aspergillus contamination of stored grains |
| Vinyl chloride | Angiosarcoma (of the liver) | Chemical used in the production of PVC pipes |
| Nitrosamines | EsophagusStomach | Found in smoked food. High levels of consumption in Japan. |
| Cigarette smoke | Squamous cell carcinomalaryngeallungSmall cell carcinoma of the lungRenal cell carcinomaTransitional cell carcinoma | Key carcinogens are polycyclic hydrocarbons |
| Asbestos | MesotheliomaBronchogenic carcinoma | Bronchogenic carcinoma is a more common sequelae of asbestos than mesothelioma |
| Arsenic | Squamous cell carcinoma of the skinAngiosarcoma of the liver | Also found in cigarette smoke |
| Naphthalene (aniline) dyes | Transitional cell carcinoma | Also found in cigarette smoke |
| Alkylating agents | Leukemia | May result from chemotherapy |
