This article provides an overview of the security regulations and prohibited items in Japanese airports. Items such as explosives, flammable liquids or gases, chemicals, drugs (including medical marijuana), firearms or weapons of any kind, knives or other sharp objects, and radio transmitters are not allowed. Passengers are limited to carrying up to 100ml of liquids and gels per item and all containers must fit inside a single transparent resealable bag which cannot exceed 1 liter in capacity. Additionally, travelers should familiarize themselves with their destination country’s laws & regulations regarding items allowed on flights departing from Japan Airports prior departure time periods from these locations.