The only other Thai to have raced in Formula One was the wealthy Birabongse Bhanuban, better known as Prince Bira, who contested 18 grands prix between 1950 and 1954 with a best result of fourth.
Albon's arrival means New Zealander Brendon Hartley, a Le Mans 24 Hours winner and world endurance champion, has lost his seat.
Hartley's French team mate Pierre Gasly has graduated to the main Red Bull Racing team.
Team principal Franz Tost said Albon, who was dropped from Red Bull's young driver programme in 2012, had showed in Formula Two -- the official feeder series to Formula One -- that he had what it takes to drive in F1.
Albon is also a good fit for the Red Bull energy drink brand, which has its origins in Thailand with the late Chaleo Yoovidhya a co-founder of the company with Austrian Dietrich Mateschitz.
Starting out in karting at an early age, with current five times F1 world champion Lewis Hamilton awarding him one of his many prizes along the way, Albon was a world champion in the KF3 class in 2010.
Formula Two winner George Russell and runner-up Lando Norris, both British, are also stepping up to Formula One next year with faded former champions Williams and McLaren respectively.
Albon, who was runner-up in the GP3 series to 2019 Ferrari driver Charles Leclerc, said it was an amazing feeling to realise a dream.
"Throughout my single seater career, I went through a few ups and downs. I was dropped by Red Bull in 2012, so from then I knew my road to Formula One was going to be a lot harder," he said.
"I worked really hard and tried to impress every time I got in the car, and I have to say a big thank you to Red Bull and (their motorsport consultant) Dr (Helmut) Marko for believing in me and giving me a second chance."
Honda-powered Toro Rosso finished ninth in the championship that finished in Abu Dhabi on Sunday. (Reporting by Alan Baldwin; Editing by Kevin Liffey and Ken Ferris)
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