Cuda and Fortran

Is there any Fortran versions of Cuda available.
I publish and do work in Theoretical Physics using clusters to run my numerical software.
C, is unfortunately a moot point for the current software, so I need to know if there are any Fortran libraries available.
I searched the archives but could not find any other mention that C.

Worse case you can call C routines from FORTRAN… and vice versa.