What Spanish name is commonly used for a quinceañera celebration itself?

A quinceañera celebration itself is commonly called a fiesta de quince años.

The phrase translates literally as “party of fifteen years” and identifies the birthday event rather than only the honoree. Quinceañera can also refer to the girl or young woman celebrating her fifteenth birthday, which is why the two expressions are sometimes used interchangeably in everyday English.

The event may include a Mass or other religious observance, followed by a reception. Typical elements can include a formal dress, a court of attendants, a choreographed dance, a presentation to guests, and family speeches. None of these elements is mandatory in every community.

Regional vocabulary varies. In some places, speakers use quince, quinceaños, or other local expressions. The established phrase fiesta de quince años remains a clear, widely recognized Spanish name for the celebration and emphasizes its birthday-party character.