熏肉或烟肉（英语：Bacon），又音译为背肯或培根，是将猪胸肉，或其他部位的肉熏制而成。烟肉一般被认为是早餐的头盘，将之切成薄片，放在锅子里烤或用油煎。烟肉味道极好，常用作为烹调，烟肉被视为肥胖的主要来源，但因为美国推出了低碳水化合物减肥法，烟肉致肥的观点渐渐改变。

最常见的烟肉是腌熏猪肋条肉（flitch），以及咸肉火腿薄片（rasher）。传统上，猪皮也可制成烟肉，不过无外皮的烟肉是可作为一个更加健康的选择。

在美国，烟肉多取自猪腹部，在英国和爱尔兰则称为斑条烟肉（streaky bacon）、fatty（形容其脂肪含量高）或美式烟肉。2002年美国出版的大受好评食谱《培根配啥都美味》进一步提升了其受欢迎程度。

Bacon is a meat product prepared from a pig and usually cured. It is first cured using large quantities of salt, either in a brine or in a dry packing; the result is fresh bacon (also known as green bacon). Fresh bacon may then be further dried for weeks or months in cold air, or it may be boiled or smoked. Fresh and dried bacon is typically cooked before eating, often by frying. Boiled bacon is ready to eat, as is some smoked bacon, but may be cooked further before eating.