Aert Anthoniszoon

or Anthonissen, also known as Aart or Aert van Antum (born c. 1579–1580; buried 7 September 1620) was a Dutch marine painter.

He gave her a power of attorney to settle an inheritance in Mechelen in 1614.

Later research showed his signature to be "AERT ANT[...]", with the letters of his surname included with varying degrees of completion.

One reason so little is known of him is that his life and work were overlooked or omitted by early 17th- and 18th-century painter biographers such as Arnold Houbraken.

[1] Anthoniszoon was the father of the marine painter Hendrick van Anthonissen.