Radian may refer to:

Radian, a unit of plane angle Radian (band), a musical group Radian (EP), an EP by Ana Free Radian (comics), a number of comics characters Radian Group, a credit enhancement company Radian Glacier, Antarctica Radian Ridge, Antarctica, see Radian Glacier Yamaha YX600 Radian, a motorbike

See also

Steradian Gradian