The top 10 construction companies worldwide are:
1. China State Construction Engineering Corporation (CSCEC)
2. Vinci Group
3. ACS Group
4. Bouygues Group
5. China Communications Construction Group (CCCG)
6. PowerChina Group
7. Skanska AB
8. China Railway Construction Corporation (CRCC)
9. L&T Construction
10. Balfour Beatty
Please note that rankings can vary based on different criteria such as revenue, market capitalization, or the scope of projects.