Salah was chosen as player of the year by the Professional Footballers Association (PFA) after an outstanding season in which he has scored 43 goals in all competitions.
With both Salah and De Bruyne miles ahead of the rest, only eight other players received votes from FWA members.
The Egypt global beat Manchester City midfielder Kevin De Bruyne to the football writers' award, with the winning margin fewer than 20 votes.More news: Significance of Labour Day: Then and now
Belgium and Manchester City midfielder Kevin de Bruyne came second with Tottenham Hotspur striker Harry Kane third.
"It's been the tightest call since 1968/69, when there was a dead heat between Tony Book of Manchester City and Derby's Dave Mackay", Barclay told Footballwriters.co.uk.
Liverpool's Mo Salah has been named the FWA Player of the Year.More news: Trump extends exemptions on steel, aluminum tariffs
For the first time in 28years, Egypt has pulled through and qualified for the World Cup and Mo Salah presents a huge hope for them and their chances if they will scale through the Group A stage against Russia (Host country), Saudi Arabia and Uruguay. "He is also the first African to receive the award and we congratulate him on a magnificent season". He led his team to the semi-finals of the CL, and it is strongly expected for Liverpool to reach the CL final after 11 years of absence.
Eyebrows were raised when Liverpool made a decision to fork out £36million on Salah in June as he failed to make the grade at Chelsea during his previous spell in England.
Although he failed to score in the goalless draw with Stoke City at the weekend, Salah has two more opportunities to break the record in Liverpool's remaining league fixtures - away to Chelsea on Sunday and at home to Brighton on the final day of the season.More news: The largest Israeli operation in Syria