Hønefoss Karosserifabrikk

Hønefoss Jernbanevogn- og Karosserifabrikk A/S, trading as Høka and at first known as Hønefoss Karosserifabrikk A/S, was a manufacturer of bodywork for buses, trucks and trains. The company was in existence from 1936 to 1968 and was based in Hønefoss, Norway. Among the company's products is Oslo Tramway's SM53 trams, the Trondheim Tramway's GB Class 3 tram and the Norwegian State Railways Skd 221 shunters.

The company was founded as Hønefoss Karosserifabrikk in 1936 by Major Roald Breien, who wanted to start a mechanical workshop to create jobs in the local area. At first the company had six employees and was based in Arnemannsveien in the city center (now the seat of the city's culture center). To begin with, the company manufactured bus bodywork for domestic coach and bus companies. In addition, the company built tank trucks, fire engines and delivery vans. Høka had the Norwegian rights to a Czech patent for closed, wood-filled steel profiles. In Sweden, this patent was held by Hägglund & Söner, thus starting the cooperation between the two companies. By 1940, Høka had 50 employees. During World War II from 1940 to 1945, the demand for new buses halted, but Høka entered the maintenance and repair industry.

After the war, during which the company had made good money, the company built a new plant at Hønengaten outside the town in 1948. This plant was located to the Roa–Hønefoss Line of the Norwegian State Railways (NSB), and a branch line was constructed from the mainline railway to the plant. The new location, the cooperation with Hägglunds and NSBs need for large amounts of rolling stock during the 1950s, made it possible for Høka to enter the rolling stock market. At the same time, the company changed its name to Hønefoss Jernbanevogn- og Karosserifabrikk (meaning Hønefoss Railway Car and Bodyworks Factory). The same year also saw Breien retire, and be replaced by Jakob Mørk, who formerly had worked for Ekebergbanen, that operated one of the suburban tramways in Oslo. That year the company had 90 employees.