We present the results of specific heat, magnetization and susceptibility measurements performed on single crystals of PrPdSn and NdPdSn intermetallic compounds. Both compounds crystallize in the orthorhombic TiNiSi-type crystal structure and order antiferromagnetically at T N = 4.2(1) K (PrPdSn) and T N = 3.5(1) K (NdPdSn). NdPdSn also undergoes an order-to-order phase transition at T 1 = 1.95(3) K. Both compounds exhibit high magnetocrystalline anisotropy at low temperatures and a complicated magnetic structure, which is underlined by the metamagnetic phase transitions of both compounds.