Trinity students may declare up to two majors. Students are made eligible to enroll by the program or department of their first major. Students with two majors may also be assigned a faculty advisor for the second major. Check this page to see how advising works in your major.
In addition to a major, you may also choose to complete the requirements of a minor or certificate program, which will be noted on your Duke record and transcript. The total combination of plans (major, minor, certificate program) may not exceed three.
You can learn about all the certificates, majors and minors at this page.