HIV and AIDS continue to be a major public health problem where almost 70 million people have been infected with the Human Immune deficiency Virus and about 35 million people have died of AIDS since the beginning of the epidemic . Globally, there are 3.3 million children under fifteen years living with HIV infection whose 95% of them acquired the infection through Mother to Child Transmission (MTCT) . Without intervention the rate of MTCT cumulatively from pregnancy to cessation of breastfeeding ranges from 25 to 48% [2–4]. Prevention of Mother To Child Transmission (PMTCT) program focuses on HIV pre and post test counseling, feeding option and use of Highly Active antiretroviral Therapy (HAART) during pregnancy, intrapartum and postpartum. Studies has shown that use of Anti Retro Viral drugs (ARV) can significantly reduce MTCT of HIV to less than 2% . The 2012 WHO guideline recommends that countries with limited laboratory and infrastructure capacity to provide universal access to CD4 cell count testing, all confirmed HIV-infected pregnant and breastfeeding women must be offered life¬long triple ART as soon as diagnosed regardless of their CD4 count or clinical stage as part of the new Option B+ . Success in preventing MTCT will not only depend on use of antiretroviral prophylaxis, but also on continuing support to the nursing mothers from their male partners. It has been shown that male partner involvement reduces the risk of vertical transmission and infant mortality by 40% compared to non-involvement . Mechanism by which male involvement contributes to the effectiveness of PMTCT include male socio cultural superiority and influence in many of the Africa settings . Women learn and retain more information when educated together with their partners  and some pregnant mothers don't accept HIV testing till they have their partners consent or assent . Indeed utilization of PMTCT services by pregnant women is affected by several factors such as fear of disclosure of HIV results, lack of male partner support, fear of violence, abandonment and stigmatization which all involve a male partner. Male involvement facilitates both ART initiation and adherence [11, 12], it increases the probability of mothers delivering at health facility  and it enables for a good choice of breastfeeding plan [14–16]. This study aimed in determining magnitude, predictors as perceived by pregnant mothers and effects of male partner involvement in PMTCT services.