Cullen Wines is a family-owned, biodynamic winery located in Wilyabrup, Margaret River, Western Australia. Founded by Dr. Kevin and Diana Cullen, it is now run by their daughter Vanya Cullen and is renowned for producing premium wines, particularly the flagship 'Diana Madeline' Cabernet blend. The winery was Australia's first carbon-neutral winery and is certified biodynamic, representing genuine independent Australian family ownership with strong environmental credentials.