Objective: To determine the effect of yoga on the duration of the second stage of labor and perineal rupture in primigravidamothers.Methods: This was a Quasy experimental study with posttest group only design. The study was conducted in the PublicHealth Center of Pekalongan, Central Java, Indonesia from December 2016 until January 2017. There were 50 mothersselected using purposive sampling, which 25 assigned in the experiment and control group. Independent t-test and ChiSquare test were used for data analysis.Results: There was a statistically significant difference in the duration of second stage of labor (p=0.000) and perinealrupture (p=0.001) between experiment and control group.Conclusion: There was a significant effect of yoga on the duration of the second stage of labor and perineal rupture inprimigravida mothers. Therefore, yoga is recommended for midwife to be included in the antenatal care.