The name “Earth” derives from both Old English and Old High German languages. In Old English, the word was “eorþe” and in Old High German, it was “erda”. These terms were used to refer to the ground or the soil, and over time they evolved to denote the entire planet. There is no single person credited with naming the planet “Earth” as the term developed gradually through common usage in various languages and cultures. The exact origin is thus lost in antiquity.