HL-2 may refer to:
* ''
Half-Life 2
''Half-Life 2'' is a 2004 first-person shooter game developed by Valve. It was published by Valve through its distribution service Steam. Like the original ''Half-Life'' (1998), ''Half-Life 2'' combines shooting, puzzles, and storytelling, and ...
'', a computer game by Valve
*
Medwecki HL 2
The Medwecki HL 2 was a Polish two seat lightplane flown in 1927. Handicapped by a low power, unreliable engine, its flying life lasted little more than a month.
Design and development
Light aircraft design was slow to start in Poland but fro ...
"Haroldek" - a 1927 Polish one-off light aircraft, built by Jozef Medwecki.
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