The polycrystalline La 0 . 6 Nd 0 . 2 Ca 0 . 2 MnO 3 thin films have been deposited at 800 o C on LaAlO 3 substrate using pulsed laser deposition. The magnetoresistance (MR=ΔR/R ( H = 0 ) ) of a thin film at H=4T initially increases with decreasing temperature attaining a peak value of 80% closer to the ferromagnetic transition temperature at 150K and then shows a gradual increase in MR leading to saturation at lower temperatures below 75K up to 10K with an MR value of 95%. The bulk sample exhibits maximum MR value of 40% in the temperature range of 50-150K, which is 50% smaller than the thin film MR values. In the film, the insulator-to-metal transition and the saturation magnetization are considerably lower compared to a bulk sample, inspite of both having the same Curie temperature. The thin film exhibits a markedly different temperature dependence in zero-field-cooled and field-cooled magnetization at 0.005T in comparison to the bulk sample possibly due to the presence of domain walls.