Low smoke and halogen free cable is a material classification of wire sheathing in the wire and cable industry. Low smoke and halogen-free wire sheaths are made of thermoplastic or thermoset materials that have low smoke emission when exposed to heat and do not contain halogens of their own.

In the railroad industry or shipbuilding industry, where it is important to protect personnel and equipment from exposure to toxic and corrosive gases, the use of low smoke and halogen-free materials for the outer layer of wire and cable is required in these applications.