Rubber Composition and Molded Article Manufactured Therefrom

A rubber composition having excellent abrasion resistance and improved viscoelasticity properties, and a tire manufactured using the same are disclosed herein. In some embodiments, a rubber composition includes a first synthetic rubber and a second synthetic rubber, and has an interaction parameter (χ) defined by Mathematical Formula 1 at room temperature is 2.0×10or more. The first synthetic rubber is a solution-polymerized modified conjugated diene-based rubber which has a 1,2-vinyl bond content of 50 wt % or more and includes a functional group bonded to at least one terminal, and the second synthetic rubber is a conjugated diene-based rubber which has a 1,2-vinyl bond content of less than 50 wt %.