'Run-off' or 'runoff' may refer to:
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Surface runoff, water that flows over the land surface
★ An alternative term in printing for
bleed.
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Two-round system - a
voting system used to elect a single winner, whereby only two candidates from the first round continue to the second round
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Instant-runoff voting - an
electoral system whereby voters rank the candidates in order of preference
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Text formatting computer programs
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RUNOFF, first computer type-setting program, on the CTSS operating system
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Runoff (program), type-setting program on the Multics operating system