Mr Salazar runs the Nike Oregon Project which is home to Mr Farah, the four-time Olympic champion. The decision comes after a four-year investigation had been conducted by the US Anti Doping Agency (USADA).
The investigation began after the BBC aired a Panorama programme in 2015 about doping at the US training base.
The television programme was a joint investigation with the US website ProPublica.
The documentary revealed that allegations of doping and unethical practices at the US training base in Beaverton, Oregon were taking place.
The UK sports governing body, UK Athletics conducted a review into the claims.
Olympian’s former trainer is given a four-year ban for alleged doping violations (Image: GETTY)
The decision comes after a four-year investigation had been conducted (Image: GETTY)
Mr Farah was allowed the continue working with Mr Salazar despite the claims.
A Nike-paid endocrinologist who treated many of Mr Salazar's athletes Dr Jeffrey Brown, has also been banned from the sport for four years.
The BBC have revealed that the doping charges against Dr Brown and Mr Salazar were brought forward by USADA in March 2017.
The two men both disputed the charges and used lawyers paid by Nike as their defence.
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Mr Farah was allowed the continue working with Mr Salazar despite the claims (Image: GETTY)
The case went to the American Arbitrators Association.
A statement from USADA CEO Travis Tygart read: “The athletes in these cases found the courage to speak out and ultimately exposed the truth.
“While acting in connection with the Nike Oregon Project, Mr Salazar and Dr Brown demonstrated that winning was more important than the health and