Joshua Blau (Hebrew: ????? ???? , born September 22, 1919 Cluj, Romania) is an Israeli scholar of Arabic language and literature, currently Professor Emeritus at the Hebrew University of Jerusalem.
Blau was elected as a member of the Israel Academy of Sciences and Humanities in 1968.
Blau was elected a Corresponding Fellow of the British Academy in 1983.
He has published a number of books and articles on the Arabic and Hebrew languages, and the Semitic languages generally, in Hebrew and English (and occasionally in German).