| Unit Name: | 66th Infantry Regiment |
| Dates: | World War II |
| Branch: | Infantry |
| Command Structure: | Japanese Eighteenth Army 51st Division |
| Battles: | Second Sino-Japanese War World War II |
The 66th Infantry Regiment was an infantry regiment in the Imperial Japanese Army. The regiment was attached to the 127th Infantry Brigade of the 114th Division and participated during the Second Sino-Japanese War. It was later reassigned to the 51st Division[1] and during the later stages of World War II, the regiment was in New Guinea, as part of the Japanese Eighteenth Army.