阿特金斯健康饮食法，又称阿特金斯减肥法、阿金减肥法、低碳减肥法，也被称作食肉减肥法、高蛋白减肥法，是美国医生罗伯特·阿特金斯（Robert Atkins）创造的减肥饮食方法，其要求完全不吃碳水化合物，而可以吃高蛋白的食品，即不吃任何淀粉类、高糖分的食品，而多吃肉类、鱼。其核心是控制碳水化合物的摄入量，从而将人体从消耗碳水化合物的代谢转化成以消耗脂肪为主的代谢模式。这种减肥法曾颇受争议，但美国医学会及新英格兰医学杂志等权威机构的证据表明，阿特金斯健康饮食法有着良好效果。

The Atkins diet, also known as the Atkins nutritional approach, is a low-carbohydrate diet promoted by Robert Atkins and inspired by a research paper he read in The Journal of the American Medical Association. The paper entitled "Weight Reduction" was published by Alfred W. Pennington in 1958. The Atkins diet led to 0.1% to 2.9% more weight loss at one year compared to a control group which received behavioural counselling.