Privately held companies based in Texas

Dell Inc., formerly Dell Computer Corporation, is an American technology company that develops, sells, repairs, and supports personal computers (PCs), servers, data storage devices, network switches, software, computer peripherals including printers and webcams among other products and services. Dell is based in Round Rock, Texas.

thumb|upright=1.2|Whataburger restaurant in Austin, Texas

infrastructure and tunneling company

former video game developer based in Austin, Texas

American multi-level marketing company

American video game development company

American luxury specialty department store

American game publishing company

former aerospace startup company based in Mesquite, Texas

The United Services Automobile Association (USAA) is an American financial services company providing insurance, including personal property and casualty and life insurance, and banking products exclusively to members of the military, veterans and their families. It was founded in 1922 in San Antonio, Texas, by a group of 25 U.S. Army officers as a mechanism for mutual self-insurance, when they were unable to secure auto insurance because of the perception that they, as military officers, were a high-risk group.

H-E-B Grocery Company, LP, is an American privately held supermarket chain based in San Antonio, Texas, with more than 435 stores throughout Texas and Mexico. The company also operates Central Market, an upscale organic and fine foods retailer.

Traxxas is a radio control model manufacturer based in McKinney, Texas, United States. Traxxas offers electric and nitro-powered radio-controlled cars, off-road and on-road vehicles, boats, and a drone.

Zello is a tech software company in Austin, Texas, U.S., known for the Zello app, which emulates push-to-talk (PTT) walkie-talkies over cell phone networks.

company

alt=|thumb|11 Greenway Plaza houses the headquarters of FlightAware. FlightAware is an American multi-national technology company that provides real-time, historical, and predictive flight tracking data and products. it is one of the world's largest flight tracking platform, with a network of over 40,000 ADS-B ground stations in 196 countries. FlightAware also provides aviation data and predicted ETAs to airlines, airport operators, and software developers. FlightAware is a subsidiary of Collins Aerospace (itself a subsidiary of Raytheon), with headquarters in Eleven Greenway Plaza in Houston,

American video game developer

American pizza buffet restaurant chain

motel chain

thumb|right|Lancair 235 thumb|right|Lancair 360 thumb|right|Lancair IV-P thumb|right|Lancair Legacy thumb|right|Lancair Propjet thumb|right|Lancair Evolution

American private equity and venture capital firm

thumb|A Vari-Lite Moving headVari-Lite is a brand of automated, variable-colour stage lighting systems. Their intelligent lighting fixtures are commonly used in theatre, concerts, television, film and corporate events.

Tellabs, Inc. is a global network technology company that provides networking and communications solutions to both private and governmental agencies. The company offers a range of products and services, including optical transport systems, access systems, managed access solutions, and network management software. The company was founded by Michael Birck in 1974 and is headquartered in Carrollton, Texas. It is currently owned by Marlin Equity Partners, who established an independent business for its product portfolio to accelerate the development of Optical local area network (OLAN) technology.

American video game developer