Look up arsenic in Wiktionary, the free dictionary.
Arsenic is the chemical element with symbol As and atomic number 33.
Arsenic may also refer to:
- Arsenic trioxide, a poison commonly referred to as simply as "arsenic"
- Arsenic acid, a chemical compound with the formula H3AsO4
- Arsenic Lake, a lake in Ontario, Canada
- Ärsenik, a French rap group
- Mr. Arsenic, an America anthology television series