OKA Motor Company manufactured cab over all terrain vehicles, particularly four wheel drive trucks and tour buses in Bibra Lake, Western Australia.

OKA Australia was founded in 1986 when a group of Australian mine executives discussed that each of them needed an off-road truck with a three-ton payload and nothing on the market at the time filled those requirements.

[1][2] Having agreed on the blueprints, the group undertook a comprehensive market study covering over 1,200 mining companies, government departments, farmers, the Australian Defence Force and potential private users to establish the parameters for the design.

In 1997, OKA licensed its technologies to Indian auto maker Hindustan Motors to produce its RTV brand of multi-utility vehicles.

[15] In 2018, a Perth-based investor who had been providing parts to owners acquired the brand rights and manufacturing facilities.