A 9 year old is allowed to watch Clash of the Titans?

It depends on the individual child and their maturity level. The movie is rated PG-13 for intense sequences of violence and action, some suggestive material, and brief strong language. Some parents may feel that it is appropriate for a 9-year-old, while others may prefer to wait until the child is older. It is important to consider the child's individual sensitivities and maturity level before deciding whether or not to allow them to watch the movie.