Language Details: Fortran

Fortran is a general-purpose, imperative programming language that is especially suited to numeric computation and scientific computing.

Fortran article on Wikipedia
Code Jam 2012 Contestants using Fortran
Qualification Round
Used in 9 solutions by 5 contestants:

Submission Origin

Australia (1 contestant)
Austria (1 contestant)
France (1 contestant)
Japan (1 contestant)
United States (1 contestant)