FrobozzCo International

Featured in: Zork, Video game (1977)

FrobozzCo International was a vast conglomerate of thousands upon thousands of companies that had once held a monopoly over every magical scroll, spell, staff, or magical device of any kind that was produced within the borders of the realms of Quendor until its destruction in the Great Diffusion of 1247 GUE. It can trace its origin to the Frobozz Magic Cave Company, which was formed at the behest of King Duncanthrax. There seem to be some contradictory elements on the history of the formation of the Frobozz Magic Construction Company (the forerunner of the modern industrial giant FrobozzCo International).

https://en.wikipedia.org/wiki/Zork

Weyland-Yutani Corp

Featured in: Aliens (1986)

The Weyland-Yutani Corporation is a large British/Japanese multinational conglomerate. It was founded in 2099 by the merger of Weyland Corp and the Yutani Corporation. Weyland-Yutani is primarily a technology supplier, manufacturing synthetics, spaceships and computers for a wide range of industrial and commercial clients, making them a household name.

Weyland-Yutani also has numerous non-manufacturing interests; the company has extensive assets in interplanetary shipping and transport, and is one of the corporations that operates human colonies outside the solar system through the Extrasolar Colonization Administration, which it owns or controls.

This huge conglomerate is always on the prowl for the best that space can offer, be it new planets suitable for colonisation or xenomorph tech for the military division.

https://avp.fandom.com/wiki/Weyland-Yutani_Corporation

Wayne Enterprises

Featured in: Batman Forever (1995) and later films

Wayne Enterprises, Inc., also known as WayneCorp, is a fictional company appearing in American comic books published by DC Comics

The American diversified multinational conglomerate is owned and chaired by Bruce Wayne.. Wayne Enterprises is a green company based out of Gotham City and headquartered in Wayne Tower.

Wayne Enterprises and the Wayne Foundation are largely run by Bruce Wayne's business manager Lucius Fox. Fox makes most company decisions on Bruce Wayne's behalf, since Wayne's time is largely occupied as the vigilante Batman.

https://en.wikipedia.org/wiki/Wayne_Enterprises

Virtucon

Featured in: Austin Powers (1997)
 

Virtucon is a multinational conglomerate corporation controlled by Number Two and later Scott Evil. In 1967, Virtucon Industries was founded by Number Two. Even though it got a rocky start as a small business, it eventually gained enough funding and corporate power.

The company started as a volatile chemicals manufacturing company. In 1982, the company switched to the communications industry. By 1997, the conglomerate has grown into several different industries, such as shipping in Texas, a steel mill in Cleveland, oil refineries in Seattle, and a factory in Chicago that produced miniature models of factories.
 

https://austinpowers.fandom.com/wiki/Virtucon

Union Aerospace Corporation

Featured in: Doom (Game) (1993) and its sequels

The Union Aerospace Corporation is the fictional multi-planetary conglomerate (possibly a megacorporation) that operates facilities on Mars and its two moons, Phobos and Deimos, where Doom takes place, as well as Earth and its Moon, and many offworld moon and planetary research stations including Tei Tenga, Jupiter (and Europa), Venus, Neptune, Amun and Saturn. It was founded in 2015 by Thomas Kelliher.

https://doom.fandom.com/wiki/Union_Aerospace_Corporation

Stagg Enterprises

Featured in: The Flash (TV series)(from 2014 to present)

Stagg Enterprises also known as Stagg Industries or just STAGG is a fictional multibillion-dollar multinational corporation in the DC Comics universe. It is owned and run by businessman Simon Stagg.

Stagg Enterprises was founded by CEO and billionaire Simon Stagg who has offices in New York City, Los Angeles and Gotham City. His company is responsible for pioneering new, innovative methods in the fields of engineering, chemistry and genetics. Stagg Industries had various subsidiaries; Stagg Mining Company, Stagg Cruise Lines, and Stagg Robotics.

https://en.wikipedia.org/wiki/Stagg_Enterprises

Massive Dynamic

Featured in: Fringe (TV series) (2008 - 2013)

Massive Dynamic is a fictional multinational conglomerate from the TV series Fringe that develops the advancement of weapons testing, robotics, medical equipment, aeronautics, genetics, pharmaceuticals, telecommunication, energy, transportation, and entertainment technology. Fictionally, the headquarters of Massive Dynamic is located at 655 18th Street, New York ("Olivia").

https://en.wikipedia.org/wiki/Massive_Dynamic

LexCorp

Featured in: Man of Steel (2013), and other DC Comics cinematic universe films

Lexcorp (originally styled as LexCorp or LuthorCorp) is a fictional company appearing in American comic book published by DC Comics. Owned by Lex Luthor, the company is based in Metropolis and its headquarter is LexCorp Tower.

LexCorp was originally organized as an aerospace engineering firm started in the top floor offices of the Daily Planet building in Metropolis, and has since become one of the world's largest, most diversified multinational conglomerates.

Lex Luthor's criminal enterprise while simultaneously being a symbol of Luthor's victory over Superman, as Luthor values defeating the Superman over financial gain. 

Although the lexcorp logo is quite simple, it has had several versions over time since the comics, then in the animated series and later in the films and TV series and also in videogames.

https://en.wikipedia.org/wiki/LexCorp

Clamp Enterpises

Featured in: Gremlims 2: The New Batch (1990)

The Clamp Premiere Regency Trade Center and Retail Concourse, commonly referred to as the Clamp Center is a major building in New York City that is owned by the eccentric billionaire Daniel Clamp. It is described as being the largest "smart building" in North America with the latest in security, communications, and climate control. It is also only one part of Daniel Clamp's worldwide business network, which includes construction, sports, finance, and a very popular line of jams and jellies. The Clamp Cable Network is located in the building as well. It is a major tourist attraction, possibly one of the largest in the United States.

https://gremlins.fandom.com/wiki/Clamp_Center

CHOAM

Featured in: Dune (1984)

The Combine Honnete Ober Advancer Mercantiles (CHOAM) is a universal development corporation in Frank Herbert's science fiction Dune universe, first mentioned in the 1965 novel Dune. CHOAM controls all economic affairs across the cosmos, though it is still at the mercy of the Spacing Guild's monopoly on interstellar travel. In a 1980 article, Herbert equated CHOAM with OPEC, the real-world intergovernmental organization which is a major power in the petroleum industry.

https://en.wikipedia.org/wiki/Organizations_of_the_Dune_universe#CHOAM 

Biffco Enterprises

Featured in: Back to the future 2 (1989)

BiffCo Enterprises, or simply BiffCo, was the enterprise founded by Biff Tannen after having made millions successfully betting on horse races with help of the Grays Sports Almanac in the Biffhorrific timeline. Biff invested in toxic waste reclamation and other heavy polluting industries with the company. Biff's position in the company gave him great influence over political leaders and law enforcement.

https://backtothefuture.fandom.com/wiki/BiffCo 

Buy N Large

Featured in: Wall-E (2008)

This Company is the only choice for all of your consumer needs in the year 2805. They'll feed you, entertain you and even jet you off to the stars while Wall-E takes care of the pollution back home.

The automated systems take care of pretty much everything, so we'd be able to sit back and relax just like everyone else… only we'd be getting paid for the privilege.

https://www.gamesradar.com/50-coolest-fictional-movie-companies/ 

Alchemax

Featured in: Spider-Man: Into the Spider-Verse (2018)

The Alchemax Corporation, or simply Alchemax, is a fictional conglomerate that appears in American comics published by Marvel Comics. The company is usually represented as part of the 2099 universe. There is also a version of Alchemax that exists on Earth-616. This competes with Oscorp and Allen Chemicals.

https://en.wikipedia.org/wiki/Alchemax