A transportable modular rack system (20) is disclosed. The transportable modular rack system comprises a modular cage (26) and a moveable insert rack (28) that is at least partially positionable within the interior of the modular cage. Articles and/or article housings (30) can be positioned on shelves (130) positioned within the interior of the moveable insert rack (26). The transportable modular rack system (20) is suitable for use in aircraft, watercraft and/or land vehicles. A pallet-mounted transportable modular rack system comprising modular rack components and moveable insert rack components is also disclosed.