Bosse "Bo" Granath (Stockholm, 21 November 1939) is a Swedish former Grand Prix motorcycle road racer.

His most successful competitive year was 1972, when he finished fifth in the 500cc world championship riding a Husqvarna motorcycle.

[2] 1962 was a school year for Granath, with a lot of bad luck and poor results, but thanks to his international license he was able to start in many foreign races.

He rode a number of international races in Belgium and the Netherlands, the Ulster Grand Prix and the GP of East Germany, but his best result was 13th place on the Sachsenring.

He went to Britain to ride at Silverstone, Snetterton and Oulton Park and was impressed by the speeds in the British races.

His air-cooled Husqvarna 500 two-cylinder engine was still very unreliable and he only scored four World Championship points this year thanks to his seventh place in the 125cc Grand Prix of Belgium.

It was the season in which the 500cc two-stroke engines became stronger, but it was Kawasaki H 1 500 Mach IIIs and Suzuki T 500s that set the tone.

Granath scored the first World Championship points for Husqvarna in the 500cc class during theTT van Assen, in which he finished eighth behind.

A new 500cc engine appeared in 1972: drivers discovered that a lightly drilled Yamaha TR 3 was a good weapon to beat the 500cc machines due to its manoeuvrability and low weight.

After the two Agustini and Alberto Pagani MV Agustas, Bruno Kneubühler and Rodney Gould took third and fourth place in the championship with these machines.

[9] With the arrival of the factory Yamaha TZ 500 and the König by Kim Newcombe, it was difficult in 1973 to score points in the 500cc class.

Remarkably, he started in three classes in 1975 in the TT van Man, a race that in the meantime was boycotted by almost everyone because of the dangerous circuit.

In the 1976 season, Bo Granath scored his last World Cup points: he finished ninth in the 350cc GP of Yugoslavia.