The Courier's New Bicycle (2011) is a novel by Australian author Kim Westwood.

The novel is set in a Melbourne of the future, when the rate of human reproductive success has dropped markedly as a result of reactions to a hastily developed and widely distributed flu vaccine.

A thriving black market in fertility treatments has arisen, facilitated by Salisbury Forth, the courier of the title.

Niall Harrison on Strange Horizons noted that the novel is "perhaps more than anything else a story about identity, about the tension between who you say you are and who they say you are".

[1] In 2011, Locus included The Courier's New Bicycle on their list of recommended science fiction novels.