GPP can refer to:
- Global Poverty Project, an international NGO focused on poverty alleviation
- General Physical Preparedness, a term used in athletics
- Geranyl pyrophosphate, a key intermediate in several biosynthetic pathways
- General Purpose Preprocessor, a type of computer code compiler
- Genuine People Personalities, a fictional software used on robots in The Hitchhiker's Guide to the Galaxy
- Grains Per Pound, a measurement of specific humidity indicating the actual quantity of moisture in the air
- Graph partitioning problem, a computational problem in combinatorial optimization
- Gross Primary Productivity, a term used in ecology to estimate the amount of organic compounds created from carbon dioxide, typically through photosynthesis
- Gross Private Product, used as a measure of wealth by Austrian economists rather than GDP. See Private Product Remaining.
- Group Policy Preferences, a user/computer management product offered by Microsoft for use with Windows computer operating systems
- Group Personal Pension - A type of pension plan in the UK, linked to an employer
- General Purpose Processor, a microprocessor optimized for a wide range of applications
- Good Participatory Practice, a framework endorsed by UNAIDS detailing the roles and responsibilities of clinical trial sponsors and implementers towards study participants and their communities