The COVID-19 pandemic has strained health systems globally, with governments imposing strict distancing and movement restrictions. Little is known about the effects of the COVID-19 pandemic on sexual and reproductive health (SRH). This study examined perceived effects of COVID-19 on SRH service provision and use in the Asia-Pacific region. We conducted a qualitative study using semi-structured interviews with 28 purposively sampled SRH experts in 12 Asia-Pacific countries (e.g. United Nations, international and national non-governmental organisations, ministries of health, academia) between November 2020 and January 2021. We analysed data using the six-stage thematic analysis approach proposed by Braun and Clarke (2019). Interviewees reported that COVID-19 mitigation measures, such as transport restrictions and those that decreased the availability of personal protective equipment (PPE), reduced SRH service provision and use in most countries. SRH needs related to service barriers and gender-based violence increased. Systemic challenges included fragmented COVID-19 response plans and insufficient communication and collaboration, particularly between public and private sectors. SRH service-delivery challenges included COVID-19 response prioritisation, e.g. SRH staff task-shifting to COVID-19 screening and contact tracing, and lack of necessary supplies and equipment. Innovative SRH delivery responses included door-to-door antenatal care and family planning provision in the Philippines, online platforms for SRH education and outreach in Viet Nam, and increasing SRH service engagement through social media in Myanmar and Indonesia. To ensure continuation of SRH services during health emergencies, governments should earmark human and financial resources and prioritise frontline health-worker safety; work with communities and the private sector; and develop effective risk communications.