Tony Mowbray is the npower Championship Manager of the Month. He led Boro to second in the table with two wins and two draws from four league games.
Former Charlton Athletic boss Alan Curbishley chairs the npower Manager of the Month judging panel. He said: "Middlesbrough have continued their great start to this season as Mowbray's men remain unbeaten in the npower Championship.
"With Boro not conceding a single goal this month, I am sure they will prove hard to beat this campaign."
Mowbray won the same monthly award with West Brom in September 2007 - and the Baggies went on to lift the Championship title.
Emma Collins, npower's head of sponsorship said: "Middlesbrough remain the only Championship side yet to suffer defeat this season so it's only right that Tony picks up this month's award.
"He has got his team superbly organised and four consecutive clean sheets is a great achievement.
"I'd like to congratulate Tony and the team on behalf of npower, and wish them the best of luck for the rest of the season."
The judging panel comprises former Charlton Athletic manager Alan Curbishley, Sky Sports Football League expert Peter Beagrie, Football League chief operating officer Andy Williamson, BBC Sport's Mark Clemmit, League Managers Association deputy CEO Olaf Dixon and npower head of sponsorship Emma Collins.
Skipper Matthew Bates has also been named npower Championship Player of the Month.
Bates led Boro to clean sheets in all four of their league outings, helping them to second in the Championship after two wins and two draws.
Boro boss Tony Mowbray said: "Matthew has played an integral role as captain and central defender in a team that has kept four clean sheets during September.
"Such an achievement is always a collective effort, of course, but Matthew has led by example and richly deserves this honour."
Sky Sports' Football League expert and former Boro midfielder Peter Beagrie sits on the npower Player of the Month judging panel.
He said: "Matthew has had an outstanding start to the season, marshalling the Middlesbrough defence.
"It's fantastic to see him playing so well after overcoming several career-threatening injuries. His performances have epitomised his drive and desire."
Emma Collins, npower's head of sponsorship, said: "Matthew has been a rock at the heart of Middlesbrough's defence this season.
"To go a whole month without conceding a goal is a very impressive feat and he deserves great credit for his performances in the heart of defence.
"I'd like to congratulate Matthew on behalf of npower, and wish him the best of luck for the rest of the season."
The judging panel comprises Sky Sports Football League expert Peter Beagrie, Football League head of communications John Nagle, BBC Sport's Mark Clemmit and npower head of sponsorship Emma Collins.