Chapter 3: Offences against the External Security of the Kingdom
- Section 119: Ceding territory or impairing independence
- Section 120: Conspiring with an agent of a foreign State
- Section 121: A Thai national who wages war against Thailand or joins the enemy
- Section 122: Aiding the war operations of the enemy
- Section 123: Obtaining state secrets affecting national safety
- Section 124: Disclosing or obtaining State security secrets
- Section 125: Tampering with documents concerning the State's international interests
- Section 126: Dishonestly failing to carry out an entrusted State mission
- Section 127: Acts causing trouble to the country from outside
- Section 128: Preparation or attempt in this Chapter
- Section 129: Supporter in an offence in this Chapter