What does Caspian mean?
Caspian \c(a)-spian, cas-pian\ as a boys' name. Place name: the Caspian Sea is the largest inland body of water in the world, lying between Russia and Asia, and its southern coast is in Iran. Author C.S. Leweis named a principal character Caspian in one of his "Chronicles of Narnia".
Caspian is an unusual given name for males and an equivalently unusual surname too for all people. (2000 U.S. Census)
Shown below is the birth name popularity of Caspian for boys. Caspian has not been listed in the Top 1000 so far. (2014 Birth Statistics)