- - - Department of Mathematics, Karaj Branch, Islamic Azad University, Karaj, Iran
- - - Department of Applied Mathematics, Imam Khomeini International University, Qazvin, Iran
- - - Department of Mathematics, Utica College, Utica, New York, ۱۳۵۰۲, USA

In this paper, a new set of spline functions called ``Flat End Fuzzy Spline" is defined to interpolate given fuzzy data. Some important theorems on these splines together with their existence and uniqueness properties are discussed. Then numerical examples are presented to illustrate the differences between of using our spline and other interpolations that have been studied before.

fuzzy interpolation, extension principle, fuzzy splines