Autumn Rhythm (Number 30) is a 1950 abstract expressionist painting by American artist Jackson Pollock in the collection of the Metropolitan Museum of Art in New York City.

[1][2] Autumn Rhythm was made in the fall of 1950 at Pollock's studio in Springs, New York, as part of a group of paintings he first exhibited at the Betty Parsons Gallery in November–December, 1951.

[5] According to art historian Monica Bohm-Duchen, Namuth's photographs lend insight to the sequence in which Pollock filled in the canvas, and the order in which paint colors were applied to the work.

[8] When the picture was shown at the Sidney Janis Gallery in 1955, it carried the title Autumn Rhythm with no reference to the number.

[9] In 1957, the Metropolitan Museum of Art acquired the painting from Pollock's estate for $20,000 plus a trade of a work already in the Met collection, Number 17, 1951.