What is the name of the door that is located on the stage floor?

The name of the door located on the stage floor is a trapdoor. A trapdoor is specifically designed to enable actors or stage crew to enter or exit the stage discreetly, often used for dramatic effects such as surprise appearances or disappearances. It is a traditional feature in theater that adds an element of surprise and helps in the staging of various scenes.

While terms like "secret entrance," "stage hatch," or "access door" might sound plausible, they do not specifically refer to the commonly recognized term used in theatrical contexts. Trapdoors have a long-standing history in theater, making the term well-understood among those in the performing arts. This familiarity supports their practical usage in productions, emphasizing the importance of the correct terminology in ensuring effective communication within the theater environment.