Between Mom and Jo is a 2006 American young adult novel by Julie Anne Peters.

The main character Nick has two mothers who conceived him through in vitro fertilisation, one of whom he simply refers to as Jo.

Growing up, Nick gets along more with Jo than with his other mother Erin since they spend more time together and have similar interests.

When Erin confronts him about his behavior, he explains that even though she is his mother biologically, Jo has always been his real mom.

Erin ultimately decides to let Nick move in with Jo in order to make him happy.