In this decade alluminium alloy be a choice as raw materials in aircraft and middle ship manufacturing industry. Alluminium alloy have the advantage that high resistance to corrosion and lighter density than steel. Alluminium alloy widely used in the manufacturing industry is AA5083H116. In manufacturing industry, the technology that commonly used is welding technologies. Welding technologies used in this research was Tandem Tungsten Inert Gas-Metal Inert Gas Welding (Tandem TIG-MIG). Variables used is welding speed variation on 12 mm/s, 16 mm/s, and 20 mm/s. The properties being evaluated on weld joint are distortion measurements, tensile test, bending test, and macro-micro structure observation. Based on the test result obtained the value of distortion decreased and hardness increased along as the increase of welding speed. Variations on the welding speed of 16 mm/s have the best value of tensile test (278,45 Mpa), bending test face bend (502,75 MPa), and the most perfect of weld bead. From the result test in this research can be concluded that increasing of welding speed produced smaller distortion and changes in physical properties on the weld joints. To get a best weld joints on AA5083H116 with 3 mm thickness should be use 16 mm/s of welding speed in Tandem TIG-MIG welding.