Helena can refer to:
- Saint Helena (Island in the Atlantic Ocean)
- Helena, mother of Constantine the Great (also known as Helena of Constantinople, a Saint in the Roman Catholic and Orthodox Christianity)
- such cities as:
- Helena, Alabama
- Helena, Arkansas - site of a Civil War battle
- Helena, Montana - the state capital
- Helena, Ohio
- Helena, a character in William Shakespeare's play A Midsummer Night's Dream.