Harvard College is an undergraduate college within the Faculty of Arts and Sciences at Harvard University.

The college offers Bachelor of Arts and Bachelor of Science degree programs. It is highly selective, with 3.5 percent of applicants being offered admission as of 2023. Harvard College students participate in over 450 extracurricular organizations and nearly all live on campus. First-year students reside in or near Harvard Yard while upperclass students reside in other on-campus housing.

Harvard College was founded in 1636 by vote of the Great and General Court of the Massachusetts Bay Colony. Two years later, the college became home to North America's first known printing press, carried by the ship John of London. In 1639 the college (heretofore unnamed) was named Harvard College in honor of deceased Charlestown minister John Harvard (1607–1638) who had bequeathed to the school his entire library and half of his monetary estate.

Harvard's first Headmaster was Nathaniel Eaton (1610–1674); in 1639, he also became its first instructor to be dismissed, for overstrict discipline. The school's first students were graduated in 1642.

The Harvard Indian College was established, with the capacity for four or five Native Americans, and in 1665 Caleb Cheeshahteaumuck (c. 1643–1666) "from the Wampanoag … did graduate from Harvard, the first Indian to do so in the colonial period."

The University of Oxford and University of Cambridge, two of the oldest and most prestigious universities in the English-speaking world, have long been structured with individual colleges as part of the larger university and with each college including an association of scholars that shared room and board. Harvard's founders may have envisioned it as the first in a series of sibling colleges replicating the Oxford and Cambridge model, which would eventually constitute a university, though no further colleges materialized in the colonial era. The Indian College was active from 1640 to no later than 1693, but it was a minor addition not operated in federation with Harvard according to the English model. Harvard began granting higher degrees in the late eighteenth century, and it was increasingly styled Harvard University, even as Harvard College was increasingly thought of as the university's undergraduate division in particular.

Harvard College is currently responsible for undergraduate admissions, advising, housing, student life, athletics, and other undergraduate matters except instruction, which is the purview of the Harvard Faculty of Arts and Sciences. The body known as the President and Fellows of Harvard College retains its traditional name despite having governance of the entire university. Radcliffe College, established in 1879, originally paid Harvard faculty to repeat their lectures for women. Since the 1970s, Harvard has been responsible for undergraduate matters for women, though women's Harvard diplomas were countersigned by the President of Radcliffe until a final merger in 1999.

Admission is based on academic prowess, extracurricular activities, and personal qualities. For the undergraduate class of 2025, Harvard had 57,435 applications and accepted 1,968 (3.4% acceptance rate). For the undergraduate class of 2023, the middle 50% range of SAT scores of enrolled freshmen was 710–770 for reading and writing and 750–800 for math, while the middle 50% range of the ACT composite score was 33–35. The average high school grade point average (GPA) was 4.18. The acceptance rate for transfer students has been approximately 1%. Harvard consistently ranks first in the enrollment of recipients of the National Merit $2,500 Scholarship; it enrolled 207 such scholars in the Class of 2022.