Boreas is an oil painting in the Pre-Raphaelite style created in 1903 by John William Waterhouse. The painting is titled Boreas, after the Greek god of the north wind and it shows a young girl buffeted by the wind. The 1904 Royal Academy notes described the subject of the painting as: "In wind-blown draperies of slate-colour and blue, a girl passes through a spring landscape accented by pink blossom and daffodils".

The reappearance of Waterhouse's Boreas in the saleroom in the mid 1990s caused a sensation as it had been lost for 90 years. Called Boreas after the north wind in Greek mythology, the work shows a young girl in a windswept landscape. In 1904 the Royal Academy notes described the subject as: In wind-blown draperies of slate-colour and blue, a girl passes through a spring landscape accented by pink blossom and daffodils. Since then, the picture's whereabouts have been unknown and it was referred to as lost in Anthony Hobson's 1989 biography of Waterhouse.

Boreas oil painintg was put up for sale in the mid-1990s after having been lost for 90 years - causing quite a sensation in the art community. The painting achieved a record price for Waterhouse at that time, achieving a price £848,500 ($1,293,962USD).