Adolescents are a vulnerable group who need special attention and support during pregnancy. Adolescent pregnancy has physical and phycological impacts such as sexual violence, dropping out of school, the social stigma that exists in the environment so that quality antenatal care services are needed. This study aims to find scientific evidence related to the developmental experience of adolescent in developing countries. This research is a Scoping review using Arkshey & O'Malley Framework and PRISMA-ScR Checklist. The literature search in this study used four databases, namely Pubmed, Wiley Online Library, EBSCO, and Proquest. Grey literature is obtained from search engines, namely Google Scholar and support sites. The keywords used are adolescent, pregnancy, experience, and scoping review. This study uses the Critical Appraisal Skills Program (CASP) to assess the quality of articles. The first 2,453 articles obtained from the search were then selected into eight articles that were eligible for the next process. The inclusion criteria for the selected articles were articles published from 2016 to 2021, articles from grey literature and related official websites, scientific articles in English and/Indonesian, and scientific articles that focused on the experiences of adolescent during pregnancy in accessing antenatal care services (ANC), the stigma experienced by adolescent during pregnancy, and partner and family support for adolescents during pregnancy. The selected studies were from seven different countries. The eight eligible articles used a qualitative research design, conducted in the hospitals, clinics, and community settings. The mapping of themes obtained from the results of the analysis of the article is the experience of teenagers during pregnancy in accessing antenatal care services (ANC), the stigma experienced by adolescents, family and partner support for adolescents during pregnancy. During pregnancy, they need financial, emotional, and psychological support from partners, families, communities, and health workers to obtain quality services, avoid discrimination, stigma, and sexual violence.