Jenny Craig, Inc. is a weight loss, weight management, and nutrition company founded by Jenny Craig and Sidney Craig now headquartered in Carlsbad, California. Jenny Craig was started in Melbourne, Australia in 1983 and began operations in the United States in 1985. The company became a part of Nestlé Nutrition in 2006.

The company operates more than 600 weight loss centres primarily in the United States, but also in Canada, Australia, Puerto Rico, and New Zealand. The program combines individual weight management counseling with a menu of foods which are distributed through its centers or shipped directly to clients.

The weight management program combines nutrition and physical activity with counseling, to help clients change lifestyle and eating habits. The goal of the program is that once clients reach their desired weight levels, they no longer need to rely on the program's prepackaged food, planned menus, or consultations to maintain a healthy lifestyle. Jenny Craig offers weight loss programs tailored to women, men, people with diabetes and seniors.

Clients are provided with individual, private counseling sessions with program consultants. Consultants are not required to have nutrition or health professional certifications, although they are trained by the company to provide education and support to clients. Members join any one of a number of types of plans and then purchase prepackaged food from their local center. (The company also directly ships dry and frozen foods in chilled containers to clients that join the Jenny Craig At Home program.) Initially, clients are given a planned menu to follow, utilizing the company's line of frozen and dry foods, along with grocery items like dairy and vegetables. Clients later are able to customize their own menus using the same range of foods. Members begin using a menu with three or four days each of non-program foods once they have reached the "halfway point" to their weight goals.