Approximately Infinite Universe is the third solo album by Yoko Ono, released in early 1973 on Apple Records.

The 1997 CD reissue on Rykodisc added two acoustic demos of songs from this era,[5] that were later released on 1981's Season of Glass.

Lennon also sang the final verse of the song, "I Want My Love to Rest Tonight."

As on the latter album, Ono used the New York band Elephant's Memory as her backing musicians.

"[7] The inside gatefold sleeve contained Ono's essay "The Feminization of Society".