Cassie is a given name and (more rarely) a surname mostly used in English-speaking countries. The following is a list of people and things by this name. Singers with the given name "Cassie" Cassandra Ventura known by her stage name Cassie (born 1986), American singer known for her singles Me & U & Long Way 2 Go. Cassie Steele (born 1989), Canadian actress and singer. Other people with the given name "Cassie" Cassie Bernall (1981-1999), student killed in the Columbine High School massacre… (More on Cassie)