The Flag of New Brunswick consists of a banner of the provincial arms, the flag was adopted by proclamation on February 24, 1965.

The gold lion on the red field across the top of the flag represents New Brunswick's ties to both the Brunswick region in Germany, as well as the arms of the King of England.

The Spanish galley was the traditional representation for a ship in heraldry. Its appearance on the flag represented shipbuilding, one of the province's main industries at the time the coat of arms was adopted.