Hecla is the traditional English spelling of the Icelandic volcano, Hekla, and may also refer to:
In places:
- Fury and Hecla Strait, Nunavut, Canada
- Hecla, Montana, USA
- Hecla, South Dakota, USA
- Hecla and Fury Islands, Nunavut, Canada
- Hecla and Griper Bay, Nunavut and Northwest Territories, Canada
- Hecla-Grindstone Provincial Park, Manitoba, Canada
- Hecla, South Uist, a mountain on the island of South Uist, Scotland
In ships:
- Hecla class bomb vessel
- Hecla class survey vessel
- HMS Hecla, various
In other uses:
- Hecla Mining Idaho based mining company
- Calumet and Hecla Mining Company, Michigan, USA
- Calumet & Hecla Band