Present article deals with the study of third grade fluid flow over a rotating vertical cone in the presence of nanoparticles i.e. thermophoresis and Brownian motion. Solutions for the boundary layer momentum, energy and diffusion equations are carried out by a well-known analytical technique namely Homotopy analysis method. The interesting findings for essential physical parameters are demonstrated in the form of graphs and numerical tables. Also, a suitable comparison has been made with the prior results in the literature as a limiting case of the considered problem. (C) 2015 Elsevier Ltd. All rights reserved.