We present a detailed theoretical calculation of collisional self-broadening in neon where the lower level is either a metastable or intercombination level, 3s'[1/2](0) or 3s[3/2](1,2), and the upper level is 3p'[1/2](1), 3p'[3/2](1,2), 3p[1/2](0,1), 3p[3/2](1,2) or 3p[5/2](2). The collisionally broadened width and shift are obtained for the temperature range 70 K to 370 K under the impact approximation using realistic interaction potentials and a fully quantum mechanical model of the scattering event. Parametric fits to the temperature dependence of the width and shift are reported which can be used to reproduce the theoretical results to within 0.5%.