Background: The challenge of achieving effective treatment and control of blood pressure is linked to various barriers to hypertension care at different layers of health system (HS). Evidence is emerging globally on the effectiveness of multi-pronged hypertension control strategies. However, no systematic review of strategies of and factors associated with hypertension treatment and control in Nepal is available. Understanding country-specific factors influencing hypertension care is critical to address the gaps in the management of hypertension. This study aimed to systematically review published literature and synthesise the findings on barriers, enablers and strategies for hypertension treatment and control in Nepal. Methods: Six databases namely Embase, PubMed, Web of Science, CINAHL, ProQuest and WorldCat, Nepali journals and Nepal government websites were systematically searched for qualitative, quantitative and mixed-methods studies investigating the factors or strategies in relation to hypertension treatment and control in Nepal. The methodological quality of selected articles was assessed using Mixed Methods Appraisal Tool. Themes on barriers and enablers were generated and framed under “health system” , “provider” and “patient” domains, according to the framework synthesis approach. Findings on hypertension strategies were narratively synthesised. Results: We identified 14 published studies; one with mixed, three with qualitative and 10 with quantitative methods. Eight were related to barriers and enablers and six of hypertension strategies. The identified barriers associated with the HS were: lack of affordable services and lack of resources. The barriers at the provider’s level were: communication gaps and long waiting hours for appointments. Poor help-seeking behaviour, non-adherence to medication, perceived side-effects of drugs, financial hardship and lack of family support were barriers identified at patient level. The following enablers were identified: positive illness perception, free essential healthcare services and family support. Strategies implemented across the HS, provider and patient were: establishing digital health records at health centres, health worker’s capacity development, health education and yoga practice. Conclusion: There is a range of barriers for hypertension treatment and control in Nepal pertaining to the HS, providers, and patients. Comprehensive interventions are needed at all three levels to further improve management and control of hypertension in Nepal.Registration: The protocol is registered in PROSPERO (registration number: CRD42020145823)