In this article we define D-metric on an arbitrary nonempty set. Then we discuss the D-convergence of sequences in the D-metric space, Dcontinuity of functions from one D-metric space to another. We define D-open and D-closed sets, D-compactness and D-completeness etc. in the D-metric spaces and establish some results analogues to general metric spaces. We prove that, for a hyperbolic valued D-continuous function, Extreme Value Theorem holds components wise only. Finally we define a D-metric on the space of all D-continuous functions and prove some results.