The Greenbrier Companies is an American publicly traded transportation manufacturing corporation based in Lake Oswego, Oregon, United States.

The company is one of the leading designers, manufacturers and marketers of rail freight equipment in North America and Europe.

Greenbrier is a leading provider of railcars, wheelsets, parts, management, leasing and other services to the railroad and related transportation industries in North America.

The company has manufacturing facilities in Paragould and Marmaduke, Arkansas; Świdnica, Poland; Hortolândia, Brazil; and Adana, Turkey, as well as three railcar manufacturing facilities in Mexico (Monclova, Ciudad Sahagún, and Tlaxcala) and three in Romania (Arad, Caracal, and Drobeta-Turnu Severin).

After an unsuccessful foray into the fertilizer distribution business, the company began to manufacture trailers, which required an investment of over $12,000.

The new trailer design was a commercial success and, in 1938, the incorporated company Gunderson Bros. was formed with its factory in Linnton, Portland, Oregon.

During the same period, the company's continued debts caused the Federal Government to take the original factory as security.

The company also constructed lifeboats, landing crafts and other vessels, as well as trailers for the United States Army.

[6] Construction of marine vessels such as tugs, peacetime barges, trawlers and more specialized craft continued in the 1950s and 1960s.

[8] In 1958, the company entered the freight railcar business with a successful bid to construct 200 boxcar underframes for the Southern Pacific Railroad.

Also in the 1980s, the company developed "Twin-Stack" wells for double-stack rail transport of intermodal containers in a joint venture with Greenbrier.

The company went public in 1994 and, in 1995, acquired TrentonWorks, another rail freight rolling stock manufacturing facility in Nova Scotia, Canada.

[15] The TrentonWorks facility closed in 2007 as a result of unfavorable exchange rates and lower operating costs in Mexico.

The same year, Greenbrier formed a joint venture with Bombardier Inc. in a former Concarril facility located in Sahagún, Mexico.

[25] In, 2018, Greenbrier and Watco announced the discontinuation of the joint venture to allow both companies to better capitalize on railcar maintenance demands in the North American market.

[26] Additionally in 2015, the Saudi Railway Company (SAR) awarded Greenbrier a contract with the Public Investment Fund (PIF) to manufacture nearly 1,200 tank wagons.

The Board of Directors appointed then-President & Chief Operating Officer Lorie Tekorius to CEO & President.

Equipment manufactured includes intermodal and conventional railcars, including boxcars, center partitions, covered hoppers, double stacks, flatcars, gondolas, tank cars, auto racks, and two proprietary automobile carriers: the AutoMax and Multi-Max.