Shasta \sh(as)-ta\ as a boy's name (also used as girl's name Shasta). Name of the mountain in California. Also the name of a soda brand. The -a ending may make the name more suitable for girls.
A baby name that sounds like Shasta is Shahzad. Other similar baby names are Chas, Chase, Chasen, Costa, Hasty, Sesto, Shabat, Shabbat, Shad, Shadow, Shadoe, Shadd, Shadi, Shade, Shaday, Shandy, Shays and Shoda.