Abstract
In this paper, using the concept of a C-class function, three types of generalized almost (f, psi, phi, theta)-contractions are defined. By the (P)-property, existence and uniqueness of some best proximity points are stated and proved in this new setting. The results presented herein are a natural continuation of those of Shatanawi and Pitea [Filomat 29(1), 2015, 63-74].