A halfback, half back, or half-back may refer to:
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, in rugby league football
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Halfback (rugby league)
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Half-back (rugby union)
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Fly-half (rugby union)
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Scrum-half (rugby union)
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Half back (association football), an obsolete position
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Halfback (American football), a type of running back
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Halfback (Canadian football), a type of defensive back
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Half-back line, in Australian rules football
See also
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Fullback (disambiguation)
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Quarterback
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Three-quarter back