A B S T R A C TWe study the contribution of young pulsars, with characteristic ages of less than 10 6 yr, to the diffuse -ray emission from the Large Magellanic Cloud (LMC). Based on the outer gap model for -ray emission proposed by Zhang & Cheng and pulsar properties in the LMC given by Hartmann, Brown & Schnepf, we simulate the properties of the young pulsars in the LMC. We show that -rays produced by the pulsars in the LMC may make an important contribution to the diffuse -rays in the LMC, especially in the high-energy range. We calculate the -ray energy spectrum of the pulsars in the LMC and show that the -ray component contributed by the pulsars to the diffuse -rays in the high-energy range (above #1 GeV) becomes dominant. We expect that none of the young pulsars should be detectable as an individual point source of -ray emission by EGRET. We also expect that pulsar contribution above #1 GeV in the SMC is very important.