Background: Globally, prolonged and obstructed labor contributed to 13% of maternal deathsrnwhich can be reduced by proper utilization of partograph during labor. Professional assistedrndelivery using a partograph during labor has paramount importance in identifying any deviationrnduring labor, Even though; partograph use is influenced by different factors as obtained from thernliteratures, magnitude of partograph utilization and associated factors is not well determined in thernstudy area.rnObjective: To assess the magnitude of partograph utilization and factors that affect its utilizationrnamong obstetric caregivers in public health institutions of Wolaita Zone, SNNPR, Ethiopia 2017.rnMethods: An Institution based cross-sectional study was conducted on obstetric care providers. Arnpre-tested and structured questionnaire was used to collect data. Data was collected by trained datarncollectors. Data was entered to EpiInfo version 3.5.1 statistical package and exported to SPSSrnversion 23.0 for further analysis. Logistic regression analyses were used to see the association ofrndifferent variables.rnResult: A total of 269 (97.8%) obstetric care givers participated in the study. Of those who werernutilizing partograph 193 (71.1%) used, routinely for all laboring mothers and 76(28.3%) ofrnparticipants reported that they don’t utilize routinely. Service year (AOR=4.9, 95% CI: 1.53-15.8),rnon- job training (AOR=0.161, 95% CI: 0.060-0.432), knowledge (AOR=3.35, 95% CI: 1.614-rn6.96), and attitude (AOR=2.997, 95% CI: 1.278- 7.029) were significantly associated withrnpartograph utilization.rnConclusion and recommendation: The study revealed that higher proportion of obstetric carernproviders use partograph to follow the progress of labor than previously conducted study. Servicernyear (year of work experience), on job training, knowledge of partograph and attitude of obstetricrncare providers towards partograph and significantly associated with partograph utilization.rnProvision of on-job training to make obstetric care givers knowledgeable on partograph,rnmaintaining providers’ retention to decrease turnover and establishing favorable attitude couldrnimprove the proper use of the tool.rnKeywords: utilization, partograph, obstetric care providers, public health institution, SNNPR,rnEthiopia.