A person/ an entity that sets and designs the possible options for decision making with respect to a specific issue or subject-matter (in a process called a choice architecture). This involves organizing the context for such a decision making to take place.

Examples of choice architects include 1) a salesperson that defines the possible alternative goods or a combination thereof, 2) a government agency that designs a ballot for voters to use in the voting process, 3) a physician who sets out the alternative treatments available to a patient, 4) a broker who provides a customer with a list of securities for investment, etc.