| Gas mask | |
|---|---|
A soldier wearing a gas mask | |
| Other name(s) | gas helmet, gasmask, gas mask canister |
| Regulated by | American National Standards Institute |
| Regulation | 42 CFR 84, ANSI Z88.7-2001, EN 14387 |
| NIOSH schedule | TC-14G (canister only) |
A gas mask is a kind of mask that fits over the face area and nose. It protects from poison gases and many other hazards in the air. They are often used in war.

Gas masks in the United States are checked by NIOSH.