30 Is a Dangerous Age, Cynthia!
- År: 1968
- Land: United Kingdom
- Genre: Komedi, Romantik
- Studio: Columbia Pictures
- Nyckelord: birthday, pianist
- Direktör: Joseph McGrath
- Kasta: Dudley Moore, Eddie Foy Jr., Suzy Kendall, John Bird, Duncan Macrae, Patricia Routledge