Space system may refer to:

• Spaceflight system, consisting of the space segment, ground segment, and sometimes user segment
• Space Systems Center, a generic name for NASA
• Space Systems Laboratory (SSL), a part of the aerospace engineering department at the University of Maryland
• Space Systems/Loral (SS/L), a manufacturing subsidiary of Loral Space & Communications
• Space system (gaming), a coded system of spatial navigation in a MU text environment
• Space radio system, any group of cooperating earth stations and/or space radio stations employing space radiocommunication

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