What is the name of the episode where SpongeBob loses his name tag?

The episode where SpongeBob loses his name tag is “Missing Identity.”

In the story, SpongeBob discovers that his name tag has disappeared from his Krusty Krab uniform. He becomes increasingly distressed as he searches Bikini Bottom for it, treating the small workplace accessory as essential to his identity and reputation.

“Missing Identity” is a Season 3 episode of SpongeBob SquarePants. It is often confused with episodes involving clothing or personal identity, such as “Ripped Pants” or “The Chaperone,” but neither centers on the lost name tag. The title directly reflects SpongeBob’s comic fear that, without the tag, people may no longer know who he is.

The episode also fits a recurring SpongeBob theme: ordinary objects become huge emotional crises. A name tag is mundane in real life, but for SpongeBob it represents his job, his pride in being a fry cook, and his connection to the Krusty Krab.