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Sub may refer to:
Common abbreviations of words beginning with "sub-"
- Submarine sandwich
- Substitute (disambiguation)
- Substitute teacher
- Bottom (BDSM), or "sub" for "submissive"
- Subwoofer loudspeaker
- Sub (TV channel)
- SUB, subtraction processor command
- SUB, substitute character, ASCII character 26
- .sub (disambiguation), several file extensions
<sub>, an HTML tag for subscript
SUBdesignates a subroutine in some programming languages
- Subscript and superscript
disambiguation page lists articles associated with the title Sub.
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