The Malaysia–Singapore border is an international maritime border between the Southeast Asian countries of Malaysia, which lies to the north of the border, and Singapore to the south. The boundary is formed by straight lines between maritime geographical coordinates running along or near the deepest channel of the Straits of Johor.
The Johor–Singapore Causeway between Malaysia and Singapore. The end of Singaporean territory in the foreground (Woodlands) and the start of Malaysian territory in the background (Johor Bahru) can be clearly seen with the differences in road surface, street lights and markings near the midsection of the Causeway.