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 2009 Contestants using Fortran
Qualification Round
Used in 3 solutions by 2 contestants:
Round 2
Used in 1 solutions by 1 contestants:

Submission Origin

Austria (1 contestant)
United Kingdom (1 contestant)