Enrollment (American spelling) or enrolment (British spelling) may refer to:

• Matriculation, the process of initiating attendance to a school
• The act of entering an item into a roll or scroll.
• The total number of students properly registered and/or attending classes at a school (see List of largest universities by enrollment)
• Concurrent enrollment, the process in which high school students enrol at a university or college usually to attain college credit
• The participation of human subjects in a clinical trial
• Biometrics, the process of adding a user's credentials to the authentication system.
• The process of being entered onto an electoral roll
• Membership in a federally recognized American Indian tribe
• The defensive curling of a trilobite over its soft ventral organs.
• Volvation, the defensive curling of other arthropods such as pill bugs rolling themselves into a "pill".

Enrollment may also refer to:

• Enrolled bill, a legislative bill in the United States that has been enacted by a legislature