Health system strengthening refers to initiatives that improve one or more functions of health systems, leading to better health. There is a large body of evidence on what works to strengthen health systems in low- and middle-income countries (LMICs), much of which is aligned to the World Health Organization (WHO) health system building blocks (service delivery; health workforce; information; medical products, vaccines and technologies; financing; and leadership/governance). Despite the fact that some people with disabilities have additional health needs, and many face additional barriers to accessing healthcare, inclusion of people with disabilities is largely missing from this evidence base. Separately, a smaller evidence base exists on increasing the effectiveness of specific health-related services targeting people with disabilities, such as health-related Community Based Rehabilitation (CBR), rehabilitation services more broadly, and mental health services. This second evidence base is less closely aligned to the building blocks. Reviewing these outputs in parallel goes some way towards identifying effective strategies for strengthening health systems for disability inclusive development.