|Greater Location:||Earth's Atmosphere|
|Type of Government:||N/A|
Dimension X (空間X - Sora X), also known as the Pseudo Dimension (疑似空間 - Giji Sora) or Space X is a location that was featured in Ultraseven. A pocket dimension created by Alien Bell, the location featured numerous hazards and dangerous organisms. After Bell was defeated by Ultraseven, the dimension gradually faded away.