Abstract: Energy levels, wavelengths, oscillator strengths, Auger rates and level-to-level dielectronic recombination rate coefficients describing dielectronic recombination into excited levels of Li-like yttrium ions from He -like ground state are calculated. Our calculations are based on Dr. R. D. Cowan's semi -relativistic multi-configuration Hartree-Fock (HFR) code, where the relativistic mass -velocity and Darwin corrections are included in the Hamiltonian, and the distorted-wave model is used for the calculation of free electron wavefunctions. The dielectronic recombination rate coefficients as a function of free electron temperatures are given in an analytical form which is not only very convenient in practice but also accurate enough compared with the exactly calculated numerical results.