Jackrabbit has several meanings, including:

• A hare belonging to family Leporidae, and mostly in genus Lepus.
• In Java computer programming contexts, Jackrabbit usually refers to Apache Jackrabbit.
• Jazz Jackrabbit is the protagonist of the videogame series with the same name.
• A kind of erotic vibrator.
• Upcoming rapper named JackRabbit is unknown and coming out in 2008.