As a member of the University of the Philippines System, it is the fourth oldest and is the largest constituent campus in terms of the number of degree-granting academic units, student population, faculty, and library resources.

[2] In addition to the units in the main campus, UP Diliman has extension programs in Angeles City, Pampanga (the Clark Freeport Zone area) and Olongapo, Zambales, as well as a marine laboratory in Bolinao, Pangasinan under the Marine Science Institute,[4] and an satellite campus at Bonifacio Global City, Taguig.

[9][10] The Management Review Committee (MRC) was created by UP President Edgardo Angara in the 1980s to evaluate and recommend measures for the university's improvement.

The report made by the MRC led to the decision of the Board of Regents to further decentralize the UP administration, declaring UP Diliman an autonomous unit and the system's flagship university on March 23, 1983.

[20] In March 2008, however, the Academic Oval was turned into one-way in order to lessen traffic volume entering the university.

According to then vice chancellor for community affairs Cynthia Grace Gregorio, the policy also promotes lessening air pollution by creating biking lanes on the inner side of the circle.

Carillon was originally constructed in 1940 by National Artist Juan Nakpil, Conservatory of Music director Ramon Tapales and UP President Bienvenido Gonzales with an initial idea of building a concrete structure that may tower the grounds of the university.

[23] These bells were forged by Van Bergen Co. in Netherlands and the largest of them weighs five tons, where the total cost of construction summed up to ₱200,000.

Beloved), the carillon tuned many music such as the Magtanim ay Di Biro (Planting Rice, a Filipino folk song) and The Beatles sounds.

[22] But as late as 2001, students said that they could hear the rhymes of London Bridge Is Falling Down and Sing a Song of Six Pence, despite the carillion being closed to prevent further mishap.

Centennial Commission launched a fund-raising program to collect ₱20 million to restore the carillon, as a projection of using the tower again in the coming 100th year of the University of the Philippines.

According to project engineer Matthew Bergers, each bell was made from 80% bronze and 20% an admixture of zinc, magnesium and phosphorus.

[22] The original wood claviers were replaced by heavy-duty oakwood; all bells are designed to hold refurbished steel pipes.

[29] Another project engineer, Eduardo Otacan, said that the new bells will have a three-octave range, and can be programmed using computers attached to the clavier.

[22] The Gen. Antonio Luna Parade Grounds, or commonly known as the Sunken Garden, is a 5-hectare (12-acre) natural depression found on the eastern side of the campus and at the end of the Academic Oval circle.

Though this has not been verified in any study, some have posited reasons for the sinking: one is that it is because of underground trenches over the campus' sewer system that connects to the Marikina Fault Line, an active geologic structure that runs across the east of Metro Manila.

[31] Inaugurated in 2018, the UP Promenade is a 120-meter walkway equipped with internet and Wi-Fi capable facilities available for the use of every student and faculty member of the Diliman campus.

[33][34][35] Fronting Gonzales Hall (Main Library), it is a 7.5-meter-wide (extending to 16 meters, more or less, at certain portions)-by-120-meter-broad walkway with alcoves, plazas and benches.

Diliman is the fourth oldest and is the largest, in terms of student population, of all the seven major campuses of the University of the Philippines.

[43] The current chancellor is Edgardo Carlo Vistan II, who was appointed by the Board of Regents into position during its meeting in April 2023.

[44] Apart from heading the university, the chancellor also holds administrative duties that represent the Board of Regents at the campus level.

Each chair is appointed by the chancellor, as recommended by the dean or institute director, and has a tenure of three years, which may be extended for up to two terms upon reappointment.

[56] UP Diliman's website led the 2024 Webometrics Ranking of World Universities in the Philippines published by the Cybermetrics Lab.

[57] 300 students enrolled in elective course, as UP Diliman opened on March 1, 2024 Celebrity Studies: Taylor Swift in Focus - its impact on the relationships between the public, media, class, politics, gender, race, and success.

The campus encompasses a number of residential areas and many students claim a sense of solidarity with the residents of these immediate communities.

create Christmas lanterns and floats and parade around the Academic Oval, culminating in a lengthy program held in front of the Amphitheater capped off by a massive fireworks display.

Fair, organized by the UP Diliman University Student Council, is a week-long event held at the Sunken Garden that features evening music concerts, booths, and amusement park rides.

Alumni: Excellence, Leadership, and Service in the Next 100 Years,” with the three cover designs showing the works of national artists Napoleon Abueva, Abdul Imao, and Benedicto Cabrera.

In the country's political history, UP has produced former Philippine presidents, José P. Laurel and Ferdinand E. Marcos; former Philippine vice-presidents, Elpidio Quirino, Diosdado Macapagal, Salvador Laurel, Gloria Macapagal Arroyo, Jejomar Binay and Leni Robredo; statesmen Benigno Aquino Jr., Arturo Tolentino, Gerardo Roxas, and Doy Laurel; prominent jurists such as former chief justices Querube Makalintal, Enrique Fernando; and members of Congress such as Senator Francis Pangilinan and Representative Martin Romualdez.

Tamano, Senator Estanislao Fernandez, Senator Juan Liwag, Chief Justice Querube Makalintal, Chief Justice Enrique Fernando, ten Associate Justices, ABS-CBN Vice President Jake Almeda Lopez, ABS founder (later part of a merger to form ABS-CBN) Antonio Quirino, and famous lawyer Estelito Mendoza), Pan Xenia fraternity (which produced Manny Villar), Beta Sigma, Tau Alpha, Scintilla Juris, and Tau Gamma Phi.