Si Lom (or Silom, Thai: สีลม) is a road in Bang Rak district, Bangkok, Thailand. Constructed in 1851 as part of a dyke and irrigation system, it has become one of Bangkoks' most cosmopolitan streets. Silom road is a major financial center; it is the home to some of the largest companies in Thailand ex. The Charoen Phokphand Group (CP), Bangkok Bank PLC, as well as a number of insurance and securities firms, it is often dubbed the "Wall Street of Thailand". Silom offers quite a broad range of nighttime activities ranging from street side shopping to strip dancing show; both Patpong and Thanon Thaniya (Little Tokyo) having entrances from Si Lom Road.

 

Si Lom Road runs parallel to the Sathorn business district. This close proximity between two major thoroughfares has led to serious traffic congestion in the area.

Si Lom is also the name of an MRT subway system stop at the intersection between Si Lom Road and Rama IV Road. It connects with the Sala Daeng station of the Bangkok Skytrain, the line of which is also titled Si Lom.