Arnim may refer to:
People Bettina von Arnim (1785–1859), born Elisabeth Catharina Ludovica Magdalena Brentano, German writer and novelist Ludwig Achim von Arnim (1781–1831), German poet and novelist Hans-Jürgen von Arnim (1889-1962), German general of the WWII Arnim (surname)
Other uses Arnim Zola, a fictional character in the Marvel Comics universe 8055 Arnim Arnim family