What is the shortest complete sentence in English?

The sentence “I am.” is the shortest grammatically correct sentence in English.

📜 History: The verb “to be” is one of the oldest in the language, originating from Proto-Indo-European roots over 5,000 years ago. It has survived linguistic changes and contractions while remaining essential to English grammar.

🤔 Trivia: Other short sentences include “Go!” and “No.”, but these are considered imperative or exclamatory rather than fully structured sentences.