Gender issues and debates on gender are ever growing to dominate the local and international politics, law, economy and social policies. The debate are hot and even now penetrating to the formerly spheres that were for quite long left un-penetrated such as those structures of religion. Gender can be defined as the social determined roles and relations between males and females. In this regard, these social constructed roles and relations have resulted into tremendous gender inequalities that need to be addressed anew with a different methodology or strategy. They call for critical and purposely attention from anyone who hopes to contribute towards making this world a better place for living. It attracts re-assessing of our understanding and the extent we are ready to promote and propagate for human rights, common good and social justice. This paper discusses gender inequality theories that best explain the existing gender inequalities among the Ha people living in Kigoma Region and explaining how gender mainstreaming strategy can be employed to reduce the existing gender inequalities. To meet the demands of the task our essay will have a part giving the region profile of demographic, geographical, historical and political data. This will be followed by a part highlighting some of the existing gender inequalities among the Buha Communities, then a part discussing the selected gender inequalities theories and lastly a part devoted to expose the methodology to follow in using gender mainstreaming strategy to reduce these inequalities.