SillaJen

SillaJen is a portmanteau of the names "Silla" and "Jen." The term typically refers to a proposed or actual collaborative or alliance between the Silla government and the Jen Tribe. Historically, this refers specifically to the political and potentially military relationship that could have existed, or may have partially existed, between the ancient Korean kingdom of Silla and tribes of the Jen during the Three Kingdoms period or Unified Silla period of Korean history.

The concept often arises in discussions about historical Korean geopolitics, particularly concerning Silla's relationships with various northern and eastern groups beyond the immediate peninsula. Discussions of SillaJen are inherently speculative due to the limited historical record and differing interpretations of available data regarding interactions between Silla and northern tribes. While the exact nature and extent of any formal "SillaJen" alliance remains unclear, the term encapsulates scholarly and popular considerations of Silla's diplomacy and influence beyond its immediate borders, and the potential impact of those relationships on regional power dynamics.