Definitions of Justin:

• name:  A male given name (very common: 1 in 321 males; popularity rank in the U.S.: #56)
• name:  A female given name (rare: 1 in 50000 females; popularity rank in the U.S.: #2791)
• name:  A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #12812)