Matlaba's winning strike was a rasping effort in a 1-1 stalemate with Platinum Stars at FNB Stadium on October 18.
He beat off competition from teammate Thabo Qalinge, who was nominated for his lofted finish against Golden Arrows in the Telkom Knockout at Princess Magogo Stadium on October 28.
Pirates' SAB League duo Siphumelele Mbulu and Saketso Moremi were also put up for the award for respective goals against Randburg AFC and Senoane Gunners.
Matlaba's goal against Dikwena is also in contention for the Absa Premiership Goal of the Month accolade.
Pirates will be back in action when they take on Golden Arrows at Orlando Stadium in the Absa Premiership on November 21.