The flag of Walloon Brabant was officially adopted on 2 January 1995. This flag strongly refers to the flag of Wallonia, with the two red roosterq on a yellow background in the upper corners.

And in the centre is a yellow lion with red tongue and claws on a black background, this yellow lion on a black background is also on the flag of the former Belgian province of Brabant, before it was split up on 1 January 1995. This also comes from the former Duchy of Brabant.

The flag is identical to its coat of arms

• 
  Flag of Wallonia
• 
  Flag of the Governor of Walloon Brabant
• 
  Flag of the former (Belgian) province Brabant
• 
  Flag of Flemish-Brabant (Flemish counterpart)
• 
  Belgian flag of Brabant on the Belgian Coat of Arms
• 
  Flag of the Duchy of Brabant
• 
  Flag of the Duchy of Brabant (Modern variant)

• 
  Coat of arms of Walloon Brabant (with crown)
• 
  Coat of arms of Walloon Brabant (without crown)
• 
  Coat of arms of Belgium
• 
  Coat of arms of the former (Belgian) province Brabant
• 
  Coat of arms of Flemish Brabant
• 
  Coat of arms of the Duchy of Brabant
• 
  Coat of arms of the Duchy of Brabant according to the Beyeren Armorial (before 1402)
• 
  Coat of arms of the Duchess of Brabant
• 
  Coat of arms of the Duke of Brabant

• Walloon-Brabant
• Flemish Brabant
• Province of Brabant
• Belgium
• Flag of Belgium
• Duchy of Brabant