Portrait of Abbondio Rezzonico is an oil-on-canvas painting by the Italian painter Pompeo Batoni, executed in 1766 and housed in the Pinacoteca of the Galleria Nazionale d'Arte Antica (Palazzo Barberini) in Rome, Italy.

In 1766, Abbondio Rezzonico had been recently appointed to the princely title of Senator of Rome by his uncle, Pope Clement XIII.

The positioning of the statuary has been concentrated and the viewpoint elevated; lacking from the section is the column marking the first mile of Via Appia, added in 1692.

In the foreground on the left corner of the painting, behind the senator, is a side view of the statue of Dea Roma, which is in the central niche of the fountain before the senatorial palace.

He has risen from the chair he was sitting on, and the table before him has a written document and an inkwell, while his hands hold an ivory scepter.