Institutions with which the HKIE has an Agreement of Co-Operation
- American Society of Civil Engineers (ASCE)
- Australian Institute of Building (AIB)
- China Association for Science and Technology (CAST)
- Energy Institute
- Guangdong Provincial Association for Science and Technology
- Guangzhou Association for Science and Technology (GAST)
- Hainan Association for Science and Technology
- Institute for Information Industry, Taiwan
- Institution of Engineers (India)
- Jiangsu Association for Science and Technology (JSAST)
- Korean Society of Civil Engineers (KSCE)
- Shanghai Association for Science and Technology (SAST)
- The Chartered Institution of Water and Environmental Management (CIWEM)
- The Institution of Civil Engineers (ICE)
- The Institution of Engineering and Technology (IET)
- The Institution of Engineers, Singapore
- The Royal Netherlands Society of Engineers