Can Scrabble words be two letters long?

Yes

Two-letter words are valid in Scrabble. Two letters is the shortest a Scrabble word can be in length. Some examples include low-scoring words such as “Re” and “Ai” to obscure higher-scoring words such as “Qi” and “Za.”

Fun fact: two-letter words are among the most searched-for words online and in Scrabble word finders. Across our site “Qi” remains the most searched-for term by players of the game.

Checking a words validity

If you wish to check a word is valid to be played in Scrabble (regardless of the length) dictionary checkers are great online tools to do so.