Osias Beert or Osias Beert the Elder was a Flemish painter active in Antwerp who played an important role in the early development of flower and "breakfast"-type still lifes as independent genres in Northern European art. He has been recognized as one of the most influential artists of the earliest generation of still life painters in Flanders. He contributed in particular to the development of still lifes placed on table tops featuring festive culinary delights as well as of sumptuous floral bouquets, typically displayed in Wan Li vases.