Arion is a Romanian surname with roots in Greece. Notable persons with that surname include:
Anton I. Arion (1824–1897), Romanian politician
Bryan Arion, Mexican actor and model
Constantin C. Arion (1855–1923), Romanian politician
Frank Martinus Arion (1936–2015), Curaçaoan poet, novelist, and language advocate
George Arion (born 1946), Romanian crime writer
Mihail Arion, Romanian diplomat
Ruth Arion (1912–1998), German-Israeli painter and enamel artist
Spiros Arion (born 1940), Greek professional wrestler