Glass touches nearly every part of daily American life, from windows and car windshields to bottles, jars, and smartphone screens. A mix of century-old manufacturers and newer specialty companies make most of the glass products used across the United States today.

Some of these companies started as small workshops in the 1800s, long before modern factories existed. Others grew through major mergers with large international glass and building material groups.

In this article, we’ll discuss the top 10 glass manufacturing companies in the United States, based on their history, ownership, and the kind of glass they are known for.

Quick Comparison

Rank	Company	Founded	Owner / Founders	US Headquarters	Core Focus
1	Corning Incorporated	1851	Founded by Amory Houghton; publicly listed, led by CEO Wendell Weeks	Corning, New York	Specialty & Technology Glass
2	O-I Glass	1929	Founded by Michael J. Owens; publicly listed, led by CEO Gordon Hardie	Perrysburg, Ohio	Glass Bottles & Containers
3	PPG Industries	1883	Founded by John B. Ford & John Pitcairn Jr.; publicly listed, led by CEO Tim Knavish	Pittsburgh, Pennsylvania	Flat & Automotive Glass
4	Guardian Glass	1932	Founded as Guardian Glass Company; owned by Koch Industries	Auburn Hills, Michigan	Architectural & Automotive Glass
5	Vitro Architectural Glass	1883 (roots)	Roots to Pittsburgh Plate Glass Co.; owned by Vitro, Mexico	Pittsburgh, Pennsylvania	Commercial Building Glass
6	Owens Corning	1938	Founded as a joint venture of Corning & Owens-Illinois; publicly listed, led by CEO Brian Chambers	Toledo, Ohio	Fiberglass & Insulation Glass
7	Libbey Inc	1888 (roots to 1818)	Founded by Edward Drummond Libbey; privately held, led by CEO Michael Bauer	Toledo, Ohio	Glass Tableware & Dinnerware
8	Cardinal Glass Industries	1962	Founded as a subsidiary of ML Gordon Sash and Door Co.; privately held, led by CEO David Erickson	Eden Prairie, Minnesota	Insulated Window Glass
9	Saint-Gobain (US Operations)	1665 (roots)	Publicly listed in France, led globally by CEO Benoît Bazin	Malvern, Pennsylvania	Specialty & Smart Glass
10	Pilkington North America	1930 (roots to Libbey-Owens-Ford)	Owned by NSG Group, Japan	Toledo, Ohio	Automotive & Flat Glass

Corning Incorporated – A Glassmaking Pioneer Behind Modern Technology

Image Courtesy: Corning Incorporated (Official Website)

• Founded: 1851 
• Owner: Founded by Amory Houghton; publicly listed, led by CEO Wendell Weeks 
• Headquarters: Corning, New York

Corning traces its roots to 1851, when Amory Houghton bought a stake in a small Massachusetts glass factory. His family later moved the business to Corning, New York, where it still operates today. Over the decades, the company developed key inventions like heat-resistant Pyrex and the first practical optical fiber.

Corning later created Gorilla Glass, the tough, scratch-resistant glass now used on millions of smartphones worldwide. The company remains led by the Houghton family’s long legacy of research-driven innovation. Wendell Weeks currently serves as chairman and CEO of the company.

What Corning Incorporated does: Makes specialty glass and materials for technology, science, and industry.

Services: Smartphone glass, optical fiber, laboratory glassware, and display glass technology.

O-I Glass – The World’s Largest Glass Container Maker

Image Courtesy: O-I Glass (Official Website)

• Founded: 1929 
• Owner: Founded by Michael J. Owens; publicly listed, led by CEO Gordon Hardie 
• Headquarters: Perrysburg, Ohio

O-I Glass traces back to inventor Michael J. Owens, who created the first automated bottle-making machine in 1903. His invention transformed glass bottle production from slow handwork into fast, large-scale manufacturing. In 1929, his Owens Bottle Company merged with Illinois Glass Company to form Owens-Illinois.

The company grew into one of the largest glass container makers in the world, supplying bottles and jars to beverage and food companies. O-I later expanded across South America, Europe, and Asia through further acquisitions. The company remains headquartered in Ohio, close to its original founding roots.

What O-I Glass does: Manufactures glass bottles and jars for beverages, food, and other products.

Services: Glass container manufacturing for beverage, food, and pharmaceutical companies.

PPG Industries – A 19th-Century Glass Company Turned Coatings Giant

Image Courtesy: PPG Industries (Official Website)

• Founded: 1883 
• Owner: Founded by John B. Ford & John Pitcairn Jr.; publicly listed, led by CEO Tim Knavish 
• Headquarters: Pittsburgh, Pennsylvania

PPG Industries began in 1883 as the Pittsburgh Plate Glass Company, built by John B. Ford and John Pitcairn Jr. to make flat glass for windows. The company became one of just a few dominant glass makers in the United States for much of the twentieth century. Over time, PPG expanded heavily into paints and industrial coatings alongside its original glass business.

In 2016, PPG sold its flat glass business to Mexican glass maker Vitro, shifting its main focus toward coatings and chemicals. The company still carries “glass” in its origin story, even though coatings now make up most of its revenue. Tim Knavish currently leads PPG Industries as chairman and CEO.

What PPG Industries does: Makes industrial coatings, paints, and specialty chemical products.

Services: Automotive coatings, architectural paints, industrial finishes, and specialty materials.

Guardian Glass – A Windshield Maker Now Owned by Koch Industries

Image Courtesy: Guardian Glass (Official Website)

• Founded: 1932 
• Owner: Founded as Guardian Glass Company; owned by Koch Industries 
• Headquarters: Auburn Hills, Michigan

Guardian Glass started in 1932 in Detroit, Michigan, as a small operation making laminated windshields for cars. Its original factory produced roughly 100 windshields a day using mostly manual labor. The company later expanded well beyond automotive glass into architectural and building glass products.

In 2017, Koch Industries, one of the largest private companies in America, completed its acquisition of Guardian Industries. The company today operates glass manufacturing plants across multiple continents. Guardian Glass remains one of the top suppliers of architectural glass in the United States.

What Guardian Glass does: Makes flat, coated, and tempered glass for buildings and vehicles.

Services: Architectural glass, automotive glass, insulated glass, and coated glass products.

Vitro Architectural Glass – An Old Pittsburgh Name Under Mexican Ownership

Image Courtesy: Vitro Architectural Glass (Official Website)

• Founded: 1883 (roots) 
• Owner: Roots to Pittsburgh Plate Glass Co.; owned by Vitro, Mexico 
• Headquarters: Pittsburgh, Pennsylvania

Vitro Architectural Glass carries forward the legacy of the Pittsburgh Plate Glass Company, founded back in 1883 as America’s first plate glass plant. For over a century, the business operated as part of PPG Industries, developing well-known glass products used in buildings nationwide. In 2016, PPG sold its flat glass division to Vitro, a large glass manufacturer based in Mexico.

The business kept much of its original American workforce and manufacturing plants after the sale. Vitro Architectural Glass is now considered the largest glass producer in the Western Hemisphere. The company continues developing energy-efficient glass technologies for commercial buildings.

What Vitro Architectural Glass does: Makes flat glass used in commercial and residential buildings.

Services: Architectural glass, energy-efficient coated glass, and insulated window glass.

Owens Corning – A Fiberglass Pioneer Born From Two Glass Giants

Image Courtesy: Owens Corning (Official Website)

• Founded: 1938 
• Owner: Founded as a joint venture of Corning & Owens-Illinois; publicly listed, led by CEO Brian Chambers 
• Headquarters: Toledo, Ohio

Owens Corning was formed in 1935 as a partnership between two major glass companies, Corning Glass Works and Owens-Illinois. The joint venture officially became its own independent company in 1938, focused mainly on fiberglass products. Its famous “Pink Panther” mascot later became one of the most recognized advertising symbols in American business.

The company built its reputation on fiberglass insulation used in millions of American homes. Owens Corning has been on the Fortune 500 list every year since it began in 1955. Brian Chambers currently leads the company as chief executive officer.

What Owens Corning does: Makes fiberglass insulation, roofing materials, and glass fiber composites.

Services: Home insulation, roofing products, and glass fiber composite materials.

Libbey Inc – America’s Leading Glass Tableware Maker

Image Courtesy: Libbey Inc (Official Website)

• Founded: 1888 (roots to 1818) 
• Owner: Founded by Edward Drummond Libbey; privately held, led by CEO Michael Bauer 
• Headquarters: Toledo, Ohio

The company was founded in 1818 and was first known as the New England Glass Company in Massachusetts. It was later moved to Toledo, Ohio, by Edward Drummond Libbey in 1888. The new location was renamed the Libbey Glass Company after a few years. It is known for its cut glass products and was later extended to produce domestic tumblers and glass tableware for the restaurant industry.

It was owned by Owens-Illinois for a considerable time until its purchase in 1993 to re-establish itself as an independent entity. The company bought the renowned glass tableware brand, Anchor Hocking, in 2001. Its corporate headquarters is currently located in Toledo, Ohio, the city it was founded in.

What Libbey Inc does: Manufactures glass tableware, drinkware, and dinnerware.

Services: Drinking glasses, glass dinnerware, restaurant tableware, and specialty glassware.

Cardinal Glass Industries – A Minnesota Window Glass Specialist

Image Courtesy: Cardinal Glass Industries (Official Website)

• Founded: 1962 
• Owner: Founded as a subsidiary of ML Gordon Sash and Door Co.; privately held, led by CEO David Erickson 
• Headquarters: Eden Prairie, Minnesota

Cardinal Glass Industries began in 1962 as a small subsidiary created by a door and window company that grew tired of long wait times from other glass suppliers. Rather than keep waiting, ML Gordon Sash and Door Company decided to manufacture its own insulated glass instead. Roger O’Shaughnessy joined the company shortly after and became its president by 1967.

Cardinal grew from a small facility in St. Louis Park, Minnesota, into a major worldwide supplier of glass for windows and doors. The company later introduced several innovations, including advanced low-emissivity coatings for energy efficiency. Cardinal remains privately held and headquartered in Minnesota today.

What Cardinal Glass Industries does: Manufactures insulated glass used in residential and commercial windows.

Services: Insulated glass units, energy-efficient window coatings, and glass fabrication for window makers.

Saint-Gobain (US Operations) – A French Glassmaker With Deep American Roots

Image Courtesy: Saint-Gobain (US Operations) (Official Website)

• Founded: 1665 (roots) 
• Owner: Publicly listed in France, led globally by CEO Benoît Bazin 
• Headquarters (US): Malvern, Pennsylvania

Saint-Gobain‘s history stretches back to 1665 in France, where the company originally supplied mirrors for the Hall of Mirrors at the Palace of Versailles. Over centuries, the business grew far beyond mirrors into one of the largest building materials companies in the world. Saint-Gobain built a significant US presence through brands like CertainTeed and specialty glass maker SAGE Electrochromics.

SAGE, based in Minnesota, makes electronically tintable smart glass used in modern building windows. Saint-Gobain also operates Vetrotech, known for fire-rated safety glass used in commercial buildings. Benoît Bazin currently leads the global Saint-Gobain company as chief executive officer.

What Saint-Gobain does: Makes specialty, smart, and fire-rated glass for buildings across the US.

Services: Smart tintable glass, fire-rated glass, insulation, and building material products.

Pilkington North America – A British Glass Legacy Under Japanese Ownership

Image Courtesy: Pilkington North America (Official Website)

• Founded: 1930 (roots to Libbey-Owens-Ford) 
• Owner: Owned by NSG Group, Japan 
• Headquarters: Toledo, Ohio

Pilkington‘s American operations trace back to Libbey-Owens-Ford, a major Toledo-based glass company formed in 1930 by combining earlier Libbey and Owens glass businesses. The British company Pilkington Brothers had separately invented the modern float glass process in 1959, which reshaped how flat glass is made worldwide. Over time, Pilkington’s global operations expanded into North America through acquisitions and mergers.

In 2006, Japan’s NSG Group completed its purchase of Pilkington, adding the historic glass name to its own international operations. Pilkington North America continues to operate manufacturing plants rooted in the same Toledo, Ohio glassmaking region as several other companies on this list. The brand remains a major supplier of automotive and flat glass across the country.

What Pilkington North America does: Manufactures flat and automotive glass using float glass technology.

Services: Automotive glass, architectural flat glass, and specialty coated glass products.

Frequently Asked Questions (FAQs)

What is the oldest glass company in this list?

Saint-Gobain is the oldest glass company with its roots in 1665 in France, but Corning and PPG are America’s oldest glass companies.

What company is known for smartphone screen glass?

Corning Incorporated is known for the production of Gorilla Glass, the toughened soda-lime glass that is used in many smartphones’ screens.

Which is the largest manufacturer of glass bottles and jars?

O-I Glass is the largest glass container company in North America, South America, and several other regions.

What companies are historic predecessors linked to the same Toledo, Ohio glass history?

Owens Corning, Libbey Inc, and Pilkington North America are linked to Toledo’s glass history and early innovators Michael Owens, and Edward Libbey.

5. Which company is now owned by Koch industries?

Guardian Glass is a former small windshield company founded in 1932, now owned by Koch industries.

Are glass manufacturers regulated in the USA?

Glass manufacturing is a heavily regulated industry; manufacturers must comply with regulations from OSHA, EPA, and other agencies.

Which company’s glass business was spun off as an independent Mexican-owned company?

PPG Industries sold its flat glass business to Mexico’s Vitro company in 2016, and now it is known as Vitro Architectural Glass.

What company is known for its tableware glass products instead of windows?

Libbey Inc. is known for glass tableware, glass drinkware, and glass dinnerware instead of windows and glass containers.

What company produces smart glass that can be electronically tinted?

Smart glass that can be electronically tinted or cleared is produced by Saint-Gobain through its SAGE Electrochromics subsidiary.

Why are these ten companies the reason why our households have glass windows, jars, and smartphone screens?

These 10 companies are responsible for most of the glass products in America; from windows, glass jars, and smartphone screens in everyday use.

Conclusion

America’s glass manufacturers industry comprises numerous companies that have played an important role in the development of the industry over the past centuries. The companies that have contributed to the current state of the industry are Corning, O-I Glass, PPG, Guardian Glass, Owens Corning, and Libbey, and Cardinal Glass Industries. 

These companies have their main place of operations on the territory of the United States. The companies Vitro, Saint-Gobain, and Pilkington have their roots in the United States, too, but they are international corporations now.These ten companies are responsible for most of the glass products produced and used in America.

 Their contribution to the industry is reflected in the production of glass products for residential, commercial, and industrial use. It is expected that the manufacturers will continue to play a significant role in the creation and provision of products to satisfy the growing demand for energy-efficient and technologically advanced building materials and other glass products.