Gender-based violence is a global problem, affecting men, women, and children disproportionately. It deters optimal participation in social, political, and economic projects within the community and impedes sustainable community development. Despite government policies and interventions to mitigate GBV, it continues to be reported. This study therefore sought to determine the nature of Gender-Based Violence in Kuria East and West Sub Counties, Migori County, Kenya. The study was grounded on the social network theory and theory of constraints and employed a mixed-method research design. Stratified sampling technique was utilized to draw a sample of 165 respondents from a population of 282, while purposive sampling was adopted to draw participants for focus group discussions and key informant interviews. Data collection methods included questionnaires, focus group discussions, and key informant interviews. The quantitative and qualitative data were analyzed using descriptive statistics and thematic analysis respectively. The study established physical violence, emotional abuse, sexual abuse, economic abuse, and female genital mutilation as the most conspicuous manifestations of GBV, underpinned by deeply entrenched social norms, and cultural practices. The study concludes that besides patriarchy, deeply entrenched norms continue to propel gender-based violence, among them physical violence. Based on these findings, the study recommends enhanced partnerships between Community-Based Organizations, governments, and security and law enforcement to create synergy and coordinated multi-agency response for GBV. The study also recommends that the existing laws, policies, and frameworks on GBV to reviewed and strengthened to ensure an efficient and effective response to GBV and adequate protection of survivors.