A kitchen chef is a person who cooks professionally for other people.

Although over time the term has come to describe any person who cooks for a living, traditionally it refers to a highly skilled professional who is proficient in all aspects of food preparation.

Below are various titles given to those working in a professional kitchen and each can be considered a title for a type of chef. Many of the titles are based on the brigade de cuisine (or brigade system) documented by Auguste Escoffier, while others have a more general meaning depending on the individual kitchen. Not all restaurants will use these titles as each establishment may have its own set guidelines to organization. Specialized and hierarchal chef titles are usually found only in fine-dining, upscale restaurants; kitchen-staff members at casual restaurants such as diners are more often called "cook" or "short-order cook".

Chef de cuisine, executive chef and head chef
This person is in charge of all things related to the kitchen which usually includes menu creation; management, scheduling and payroll of entire kitchen staff; ordering; and plating design. Chef de cuisine is the traditional French term from which the English word chef is derived. Head chef is often used to designate someone with the same duties as an executive chef, but there is usually someone in charge of them, possibly making the larger executive decisions such as direction of menu, final authority in staff management decisions, etc. This is often the case for chefs with several restaurants.