The three Baltic countries have a long history of teaching computing at all levels, from preschool to doctoral studies. Although computing education in Estonia, Latvia and Lithuania was quite similar when the Soviet Union collapsed in 1991, subsequently the paths of school informatics in these three countries departed significantly. In Estonia, informatics as a separate school subject changed into digital literacy course, then became an elective course, just to disappear altogether from the curriculum of 2001, and now finally making its way back to schools and research in recent years. In Latvia, a pragmatic approach was introduced in 1990s by including school informatics the digital skills requested by employers and uniformed by European Computer Driving License. In Lithuania, the development of school informatics has been more systematic, also the CER (Computing Education Research) community has been the most active compared to the other two countries. In this chapter, we present the development trajectories of Computing Education and related research in Estonia, Latvia and Lithuania, along with key milestones, achievements, similarities and differences.