This project represents the design of the first phase of Karbala International Airport Passenger Terminal Building. Phase One represents a capacity of 3 million passengers per year. The design is created for a strategic growth of the infrastructure, based on a parametric modular grid, thus allowing a Second Phase representing a capacity of 6 million passengers per year. The design strategy allows the growth of the infrastructure in a logical organic expansion, that can be reajusted in size according future needs.