Harvard University Free Online Courses 2026: 120+ Free Courses in Data Science, AI, Business, Programming
Introduction
Harvard University offers a large collection of free online courses through its Harvard Online platform. The current free-course catalogue lists 127 courses across different subject areas, giving learners the opportunity to study online in fields including computer science, data science, programming, business, health and medicine, education, mathematics, science, humanities, social sciences, art and design, and theology.
The courses are available to learners online, and many are currently listed as available now. Course lengths vary from short programmes of a few weeks to courses lasting 15 weeks or more.
This is not a scholarship that provides tuition or living expenses. It is a collection of free online learning opportunities from Harvard.
Benefits
Learners can access free courses in a wide range of areas, including:
- Art & Design
- Business
- Computer Science
- Data Science
- Education & Teaching
- Health & Medicine
- Humanities
- Mathematics
- Programming
- Science
- Social Sciences
- Theology
Examples of free courses currently listed include:
- CS50: Introduction to Computer Science — an introduction to computer science and programming.
- Machine Learning and AI with Python — introduces decision trees and foundational concepts in machine learning and artificial intelligence.
- CS50’s Introduction to Cybersecurity — teaches learners how to protect data, devices and systems from modern threats.
- Using Python for Research — helps learners build on introductory Python knowledge and use Python 3 for research.
- CS50’s Computer Science for Business — introduces computer science and technology literacy for business professionals.
- Introduction to Data Science with Python — teaches learners how to use Python to analyse data.
- Data Science: Building Machine Learning Models — focuses on building a movie recommendation system and understanding recommendation techniques.
- The Architectural Imagination — introduces fundamental principles of architecture.
- Fundamentals of Neuroscience, Part 1 — explores the electrical properties of neurons.
- Introduction to Family Engagement in Education — examines collaboration between families and educators.
- Humanitarian Response to Conflict and Disaster — explores principles and challenges involved in humanitarian response.
- Science & Cooking — uses cooking and food to explore chemistry, physics and engineering.
- Pyramids of Giza: Ancient Egyptian Art and Archaeology — explores the archaeology, history, art and hieroglyphs of the pyramids.
- American Government: Constitutional Foundations — examines the development of early American politics and the U.S. Constitution.
- Introduction to Linear Models and Matrix Algebra — teaches the use of R programming for analysing data in the life sciences.
The catalogue also includes courses in areas such as statistics, R programming, biotechnology, global health, literature, history, philosophy, public health and more.
Eligibility
The Harvard free-course catalogue does not state a general academic eligibility requirement for accessing the listed courses.
Instead, eligibility and requirements can vary from one course to another. Applicants should check the individual course page before enrolling to see whether the selected course has any specific requirements.
The catalogue allows learners to filter courses by:
- Subject area
- Start date
- Harvard school
- Duration
- Difficulty level
- Learning format
The available difficulty filters include Introductory, Intermediate and Advanced, while learning formats include Online, Online Live, In-Person and Blended. The free-course page specifically lists the courses under the free filter.
Deadline
There is no single application deadline for all Harvard free online courses.
The catalogue shows that many courses are “Available now,” while others have specific opening dates. Individual course pages should therefore be checked for the relevant registration or start date.
For example, the catalogue currently shows courses with registration marked Available now, while some other courses have future opening dates.
How to Apply
Interested learners can apply/enrol directly through the Harvard Online free courses catalogue.
Follow these steps:
- Visit the official Harvard free-course catalogue.
- Browse the available courses.
- Use the filters to narrow your search by subject, duration, difficulty, school or course format.
- Select a course that interests you.
- Open the individual course page and review its details, including the course description, duration and availability.
- Follow the enrolment instructions provided on the individual course page.
- Begin the course according to the schedule provided.
Some examples of the courses currently available include CS50: Introduction to Computer Science, Machine Learning and AI with Python, Using Python for Research, CS50’s Introduction to Cybersecurity, Data Science: Building Machine Learning Models and Introduction to Data Science with Python.
Important: Harvard labels many courses “Free”* rather than simply “Free.” Learners should check the individual course page for the exact terms attached to the free offering before enrolling. The catalogue also contains paid courses, so make sure the course you select is actually listed under the Free filter.
Scholarships Expiring Soon
Conclusion
Harvard’s free online course catalogue provides learners with access to a broad range of subjects, including AI, programming, data science, business, health, science and humanities, without needing to attend Harvard in person.
Application Link
Explore Harvard University’s free online courses here:
Courses currently listed: 127.
