2 Kings 3 is the third chapter in the second part of the Books of Kings in the Hebrew Bible or the Second Book of Kings in the Old Testament of the Christian Bible. The book is a compilation of various annals recording the acts of the kings of Israel and Judah by a Deuteronomic compiler in the seventh century BCE, with a supplement added in the sixth century BCE. After a short introduction to the reign of the last king of Israel from the Omride, Jehoram of Israel, the son of Ahab, this chapter records the war of the coalition of the kings of Israel, Judah, and Edom, against Mesha the king of Moab with some contribution of Elisha the prophet. Another view of the events in this chapter is notably provided by the inscription on the Mesha Stele made by the aforementioned king of Moab in c. 840 BCE.

Moab is an ancient Levantine kingdom whose territory is today located in southern Jordan. The land is mountainous and lies alongside much of the eastern shore of the Dead Sea. The existence of the Kingdom of Moab is attested to by numerous archaeological findings, most notably the Mesha Stele, which describes the Moabite victory over an unnamed son of King Omri of Israel, an episode also noted in 2 Kings 3. The Moabite capital was Dibon. According to the Hebrew Bible, Moab was often in conflict with its Israelite neighbours to the west.