WAPI may refer to:
- WAPI (AM), a radio station (1070 AM) licensed to Birmingham, Alabama, United States
- WAPI-FM, a radio station (100.5 FM) licensed to Helena, Alabama
- Warsteiner Premium Pilsener, a German beer
- Washington Asian Pacific Islander Community Services
- Water Pasteurization Indicator
- WLAN Authentication and Privacy Infrastructure, a Chinese national standard for wireless LANs
- Workflow APIs and Interchange Formats, a specification from the Workflow Management Coalition (WfMC)
- World Association of Professional Investigators