What is an office that keeps records of marriages and divorces called in English? I guess Civil registry is the general term, but what's the specific word for the above mentioned office?
In Britain, this office is called the Register Office (informally, registry office).
A register office (frequently referred to as a "registry office" in non-official and informal use) is a British term for a civil registry, a government office and depository where births, deaths and marriages are officially recorded and where one can get officially married, without a religious ceremony. The term and function is also used in some parts of the former British Empire such as Ireland, Australia, New Zealand, India, and Jamaica, but not Canada.