- Istanbul, Turkey 
- Jeddah, Saudi Arabia
- Shenzhen, People's Republic of China (July 2006)
- Kuching, Malaysia (2008)
- Surabaya, Indonesia
- Tangerang, Indonesia
I aways thought that cities or towns can only be matched to one other in the world, how ever Johor Bahru has six.
Twin towns and sister cities are two of many terms used to describe the cooperative agreements between towns, cities, and even counties in geographically and politically distinct areas to promote cultural and commercial ties.
For more information on the above check out the following site,