Aaron Elijah ben Aryeh Löb Pumpianski (Hebrew: אַהֲרֹן אֵלִיָּהוּ בֵּן אַרְיֵה לֵיבּ פּוּמפִּיאַנְסקִי, romanized: Aharon Eliyahu ben Aryeh Leyb Pumpianski, Russian: Арон Илия Пумпянский, romanized: Aron Ilya Pumpyanskiy; 1835 – 26 April 1893) was a Russian crown rabbi and author.