BACKGROUND: The role of global initiatives in catalyzing change within national contexts is complex and less understood. Addressing adolescent sexual and reproductive health in Kenya requires concerted efforts of both state and non-state actors and more importantly, a supportive environment. This paper deconstructs the moral and social narratives of adolescents' and young people's sexual and reproductive health (AYSRH) in Kenya as driven by the powerful discourse and ideologies pre- and within the Millennium Development Goal (MDG) era. METHODS: Literature was systematically searched in PubMed and Medline with policy documents obtained from government agencies from the pre-MDG period (2000 and earlier) and within the MDG period (2001-2015). Literature with a substantial focus on SRH were eligible if they captured the different facets of ASRH in Kenya and sub-Saharan Africa (SSA). The results were reviewed and synthesized to disentangle the moral and social narratives of AYSRH in Kenya with an MDG lens. RESULTS: The evolution of AYSRH policies and programmes in Kenya was gradual and largely shaped by prevailing development threats and moral and social narratives. Pre-MDG period was dominated by issue-based policies of population growth and high fertility rates, with a focus on married population with strong cultural and religious barriers to AYSRH; early to mid-MDG was mainly influenced by the threat of HIV/AIDS, culminating in the first Adolescent Reproductive Health and Development Policy in 2003. However, the policies and subsequent programmes focused on abstinence only and medical narratives, with persistent religious and cultural opposition to AYSRH. Late-MDG saw more progressive policies (these are policies that refer to those that tends towards acceptance of liberal social reforms and which sometimes are contrary to entrenched social norms, beliefs and practices), high government commitment and a refocus on SRH issues due to sustained early childbearing, culminating in the revised Adolescent Sexual and Reproductive Health Policy of 2015. CONCLUSION: Debates in the translation of global goals and commitments to policy and practice at country level need to account for national level realities in AYSRH reforms. The findings contribute to critical evidence for strategic policy and programming approaches for AYSRH in Kenya and in SSA and for the realization of their rights within the context of sustainable development goals.