The chancery is in Beirut. Lebanon is the host country only; this embassy is not the mission for Lebanon. The Embassy of Japan in Lebanon is the primary mission for Lebanon.
The Middle East list dated 5 March 2026 gives this Beirut address for the Embassy of Japan in Syria. It is not the Embassy of Japan in Lebanon. Lebanon's embassy telephone on the same list is (961-1) 989751, 989752, 989753.
The heads list links the Embassy in Syria and names no ambassador beside it.