What is the name of the punctuation mark used at the end of a question?

The punctuation mark used at the end of a question is the question mark.

In English, the question mark replaces the period at the end of a direct interrogative sentence, as in “Where are you going?” It signals that the sentence is asking for information, confirmation, or a response. It can also end a shorter interrogative phrase or clause.

The mark has several names, including interrogation point, query, and eroteme. Its modern form developed gradually from medieval practices, and a reversed question mark called the percontation point was proposed by Henry Denham in the 1580s for rhetorical questions. That innovation did not become standard English punctuation.

Rules vary across languages. Spanish normally places an inverted question mark at the beginning and a regular one at the end. French typography traditionally uses a space before the mark, while standard English does not. A question mark is also different from an exclamation mark: the former primarily marks interrogation, while the latter expresses strong feeling or emphasis.