- ABSG stands for Abia State Government (Nigeria)
- ABSG stands for Accreditatie Bureau Sociale Geneeskunde (Dutch: Accreditation Board of Social Medicine)
- ABSG stands for Adult Bible Study Guide (Seventh-day Adventist Church)
- ABSG stands for Advanced Bash-Scripting Guide
- ABSG stands for Agri-Business Shippers Group
- ABSG stands for Advanced Business Solutions Group (Unis Lumin Inc.; Canada)
ABSG