XRL may refer to:
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Guangzhou–Shenzhen–Hong Kong Express Rail Link, a high-speed railway line connecting Beijing and Hong Kong
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Hong Kong West Kowloon railway station, Hong Kong, Immigration Department station code XRL
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X-ray laser, a device that uses stimulated emission (The acronym can refer to these in either in the general sense, or as a part of the
Strategic Defense Initiative
The Strategic Defense Initiative (SDI), derisively nicknamed the "''Star Wars'' program", was a proposed missile defense system intended to protect the United States from attack by ballistic strategic nuclear weapons (intercontinental ballistic ...
,
Project Excalibur
Project Excalibur was a Lawrence Livermore National Laboratory (LLNL) Cold Warera research program to develop an X-ray laser system as a ballistic missile defense (BMD) for the United States. The concept involved packing large numbers of expendab ...
)
{{disambiguation