Relatively few studies have investigated the performance of coated tools at high temperatures. This is of interest for die casting and warm forging industries, where tool materials are expected to have high toughness, high tempering resistance and endure erosion, wear and thermal fatigue. This paper reports an investigation of the performance of AISI H13 tool steel, coated with TiN, CrN and duplex coatings, during thermal fatigue tests on a thermal cycling rig. During the testes, 20-mm long cylinders, with 10 mm diameter, were subjected to 500 high frequency induction heating and water cooling cycles, lasting 7 and 3 s, respectively. The thermal fatigue damage was evaluated by analysing different crack dimensions and distribution by light microscopy. The results showed that the coatings increased thermal fatigue resistance.