Sten Johan Germund Olovsson Rylander is a retired Swedish diplomat with over 40 years of experience in foreign service and development work, particularly in Africa. He joined the Swedish Ministry for Foreign Affairs in 1970, holding postings at the World Bank in Washington, D.C., and the Swedish OECD delegation in Paris before focusing on Southern Africa. In 1979, he became country director for Sida in Botswana and Lesotho, establishing close contacts with the African National Congress (ANC) and participating in sensitive support activities during the liberation struggles. He later served as Swedish ambassador to Angola (1985–1988), where he engaged with both the ANC and SWAPO, followed by senior roles in Stockholm overseeing bilateral development cooperation.