Possible Worlds is a poetry collection by Australian poet and writer Peter Porter, published by Oxford University Press, in 1989.

[1] The first edition contains 42 poems with some being published here for the first time.

[1] Contents: Writing in Westerly Lawrence Bourke noted: "Possible Worlds which carries the Poetry Book Society Recommendation is a delight.

As with other Porter books the reading of anyone poem gains by reading it alongside others, where recurrent ideas, images and key words illuminate, refer to and sometimes contradict each other, and the difficulties if not entirely massaged away, smooth out enough to reward and entice to further rereading...Unlike those who look for geographical landfall Porter cannot rest with the literal (and limited) discovery; there are always further reaches of self and art, further "possible worlds"; and with Porter much troubled by death since his first book as a thirty-two year old, the tension between rest and voyaging is no less challenged in Possible Worlds published in his sixtieth year.

"[3] After the initial publication of the collection by Oxford University Press in 1989,[4] it has not been reprinted.