The Polish Rider is a seventeenth-century painting by Rembrandt, usually dated to the 1650s, of a young man traveling on horseback through a murky landscape, now in The Frick Collection in New York.

At the beginning of the twentieth century, Alfred von Wurzbach suggested that Rembrandt's student Aert de Gelder might have been the author, but his opinion was generally disregarded.

Dutch equestrian portraits were infrequent in the 17th century and traditionally showed a fashionably dressed rider on a well-bred, spirited horse, as in Rembrandt's Frederick Rihel.

Historical characters have also been suggested, ranging from Old Testament David to the Prodigal Son and the Mongolian warrior Tamerlane, or the Dutch medieval hero, Gijsbrecht IV of Amstel.

The young rider appears to many people to face nameless danger in a bare mountainous landscape that contains a mysterious building, dark water and in the distance evidence of a fire.

[3] In 1993 the artist Russell Connor painted a portrait in the style of Rembrandt showing the Dutch master, palette in hand, standing in front of the incomplete Polish Rider.