美式足球或美式橄榄球源自英式橄榄球，是橄榄球运动的一种。

American football or American football derived from the British rugby, rugby is a sport.

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美国的橄榄球运动起源于英国的橄榄球赛，同一般的足球运动、即英式足球截然不同。

American football is derived from the English game of rugby, and is entirely different from ordinary football, that is, soccer or association football.

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美国的橄榄球运动起源于英国的橄榄球赛，同一般的足球运动、即英式足球截然不同。

American football is derived from the English game of rugby, and is entirely different from ordinary football, that is, soccer or association football.

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