This study explored inclusive leadership and organisational success, focusing on hearing and speech-impaired people in leadership and decision-making. Despite global diversity and inclusion advocacy, people with communication impairments are under-represented in organisational governance. The study examined the barriers to leadership engagement among people with hearing and speech impairments, the enabling variables that promote inclusion, and the influence of inclusive leadership on organisational effectiveness. The Social Model of Disability, Inclusive Leadership Theory, and Human Capital Theory underpinned the study. A case study-based qualitative research design was used. Semi-structured interviews, document analysis, and observational insights with hearing and speech-impaired people and organisational stakeholders collected data. The data was analysed using thematic analysis to discover leadership participation, accessibility, organisational culture, and effectiveness themes. Communication difficulties, inaccessible organisational processes, discriminatory attitudes, insufficient policy execution, and exclusion from informal workplace networks greatly limited leadership engagement among hearing and speech-impaired people. The study also revealed that accessible communication methods, supportive leadership, inclusive workplace culture, mentorship opportunities, and assistive technologies increased organisational decision-making involvement and inclusion. The study also showed that inclusive leadership improved creativity, employee engagement, collaboration, communication efficiency, and institutional legitimacy. The study found institutional rather than impairment-based exclusion of hearing and speech-impaired people from leadership positions. It confirmed that inclusive leadership is a key organisational and social justice requirement. Therefore, the study proposed complete accessibility policies, inclusive leadership development programmes, workplace disability sensitisation programmes, and enhanced disability inclusion enforcement. Insight into communication-related deficits in organisational leadership and governance is added to the literature. 

Keywords: Inclusive Leadership, Organizational Effectiveness, Persons with Hearing and Speech Impairment, Leadership Participation, Decision-Making Structures.