Firestorm may refer to a number of characters, as well as other concepts.
- For conjoined meta-human that is the result of the fusion between Martin Stein and various other individuals see Firestorm
- For Earth-2 equivalent see Deathstorm
- For individual characters who were parts of Firestorm at some point see Martin Stein, Ronnie Raymond, Jefferson Jackson and Valentina Vostok
- For individual characters who were parts of Deathstorm see Martin Stein (Earth-2) and Ronnie Raymond (Earth-2)
- For transmutation project named "Fusion, Ignition, Research Experiment and Science of Transmutation Originating RNA and Molecular Structures" see F.I.R.E.S.T.O.R.M.
- For individual members of F.I.R.E.S.T.O.R.M. see Martin Stein and Jason Rusch
- For soviet transmutation project regarding Martin Stein see Operation Svarog
- For individual members of Operation Svarog see Valentina Vostok, Vandal Savage and Mikhail Arkadin
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