Barry Allen is the name of several characters:
- For the Earth-1 character, also known as The Flash, see Barry Allen (Earth-1).
- For a time remnant of the Earth-1 character, also known as Savitar, see Barry Allen § Savitar.
- For the Earth-2 character, see Barry Allen (Earth-2).
- For the Earth-90 character, also known as The Flash, see Barry Allen (Earth-90).
- For a clone of the Earth-90 character, also known as Pollux, see Pollux.