How many States of India border Myanmar

India shares a land border of approximately 1,643 km with Myanmar, which is situated along the eastern frontier of the country [1]. This international boundary is shared by four North-Eastern Indian states: Arunachal Pradesh, Nagaland, Manipur, and Mizoram. The border follows the watershed between the Brahmaputra and Irrawaddy (Ayeyarwady) rivers, passing through the Patkai range and thickly forested hills [1]. Arunachal Pradesh shares the northernmost part of this border near the tri-junction with China, while Mizoram forms the southern tip of the land boundary [1]. Historically, these regions have shared ethnic ties and a Free Movement Regime (FMR) that allowed local communities to cross the border without visas, though recent security concerns have led to increased fencing and monitoring. Consequently, exactly four Indian states border Myanmar.

Sources

1. [1] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 16: India–Political Aspects > India-Myanmar Boundary > p. 48