Arrhidaeus or Arrhidaios (Greek: Ἀρριδαῖoς; lived 4th century BC), one of Alexander the Great's generals, was entrusted by Ptolemy to bring Alexander's body to Egypt in 323 BC, contrary to the wishes of Perdiccas who wanted the body sent to Macedonia. On the murder of Perdiccas in Egypt in 321 BC, Arrhidaeus and Peithon were appointed temporary commanders in chief, but through the intrigues of the queen Eurydice they were obliged soon afterwards to resign their office at Triparadisus in Northern Syria. On the division of the provinces which was decided by those attending Triparadisus, Arrhidaeus obtained the Hellespontine Phrygia. In 319 BC, after the death of Antipater, Arrhidaeus made an unsuccessful attack upon Cyzicus; and Antigonus gladly seized this pretext to require him to resign his satrapy. Arrhidaeus, however, refused to resign and shut himself up in Cius.
- Smith, William (editor); Dictionary of Greek and Roman Biography and Mythology, "Arrhidaeus (2)", Boston (1867)
| Regent of Macedon