Massa is a 1626 oil-on-canvas painting by the Dutch artist Frans Hals that is in the collection of the Art Gallery of Ontario.

Other scholars, such as Numa S. Trivas, did advance the idea that it was a portrait of Massa, and this was confirmed by the discovery of an inscription on a seventeenth-century engraving.

Massa appears leaning over the back of a chair, a significant departure from standard formal portrait poses of the period.

The view through the window of large coniferous trees may be intended to reflect this, it being a scene of Muscovy where much of Massa's trading was conducted.

In traditional symbolism this represents friendship and constancy, and may reflect the close relationship between the artist and subject.

The insurance company agreed to pay a ransom for the stolen pictures, and three weeks after disappearing the painting was recovered from a storage room in Parkdale.