The Moroccan coach, formerly in charge of AS Vita Club and Marumo Gallants, guided Orlando Pirates to their first South African top-flight championship in 14 years this past weekend.
It was Ouaddou’s third Betway Premiership Coach of the Month award and comes following an unbeaten run of three wins and one draw in four matches.
Ouaddou edged out Mamelodi Sundowns boss Miguel Cardoso and TS Galaxy’s Bernard Parker to the award as Sipho Chaine scooped the Player of the Month trophy.
The Bucs goalkeeper kept four clean sheets from four games in Mey, enroute to breaking the all-time record of 21 clean sheets in a single season.
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Sekhukhune United’s Bright Ndlovu, meanwhile, won the Goal of the Month for his strike against Siwelele at the Peter Mokaba Stadium on 23 May.
All winners are selected by an independent panel of Premier Soccer League -accredited journalists and broadcasters.