Seam strength is the strength of the seam measured from a sewn garment. A seam can be failed due to different reasons like breaking of sewing thread, tearing of fabric, excessive seam slippage or can be a combination of those. The objective of this study is to find out the effect of different seam on seam strength. For this experiment, a denim fabric having the construction of (68*9)/(46*7) has been collected. Then the samples are prepared according to ASTM D1683 (EQ28C) method having dimension of 10cm width & 20cm long. After that seam strength of all the samples have been done using tensile strength tester.