S5 or S-5 may refer to:

Science

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Technology

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Electronics

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Software

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Transportation

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Airlines and airports

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Mass-transit lines

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S-Bahn

Other lines

Roads

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Vehicles

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Aircraft

Automobiles

Spacecraft

  • Saturn V, the rocket used mostly in the Apollo program

Trains

Watercraft

Other uses

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See also

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  • SysV, the UNIX System V