In Greek mythology, Macar (/ˈmeɪkər/; Ancient Greek: Μάκαρ Makar) or Macareus (/məˈkæriəs, -ˈkɑːrjuːs/; Μακαρεύς Makareus means 'happy'^[1]) or Macareas (Μακαρέας, Makareas), is the name of several individuals:

• Macareus, an Arcadian prince as one of the 50 sons of the impious King Lycaon either by the naiad Cyllene,^[2] Nonacris^[3] or by unknown woman. He was the eponym of the town of Macaria in Arcadia.^[4] Macareus and his siblings were the most nefarious and carefree of all people. To test them, Zeus visited them in the form of a peasant. These brothers mixed the entrails of a child into the god's meal, whereupon the enraged king of the gods threw the meal over the table. Macareus was killed, along with his brothers and their father, by a lightning bolt of the god.^[5]
• Macareus, son of Aeolus and either Enarete or Amphithea.^[6]
• Macareus, a king of Locris and father to Euboea.^[7] He may be the same with Macareus, father of Megaclite who consorted with Zeus and became the mother of Thebe and Locrus.^[8]
• Macareus, a king of Lesbos and son of Crinacus.^[9]
• Macareus of Rhodes, one of the Heliadae, children of Rhodus and Helios.^[10]
• Macareus, one of the Lapiths at the wedding of Pirithous and Hippodamia; he killed the Centaur Erigdupus.^[11]
• Macareus, a companion to Odysseus on his voyages, from Nericus, who also encountered Aeneas. He was one of those who got transformed into pigs by Circe.^[12]

• Macaristan (in Turkish) and Al Majar (in Arabic) names for Hungary based on its name, Magyarország, in Hungarian.

• Apollodorus, The Library with an English Translation by Sir James George Frazer, F.B.A., F.R.S. in 2 Volumes, Cambridge, MA, Harvard University Press; London, William Heinemann Ltd. 1921. ISBN 0-674-99135-4. Online version at the Perseus Digital Library. Greek text available from the same website.
• Diodorus Siculus, The Library of History translated by Charles Henry Oldfather. Twelve volumes. Loeb Classical Library. Cambridge, Massachusetts: Harvard University Press; London: William Heinemann, Ltd. 1989. Vol. 3. Books 4.59–8. Online version at Bill Thayer's Web Site
• Diodorus Siculus, Bibliotheca Historica. Vol 1-2. Immanel Bekker. Ludwig Dindorf. Friedrich Vogel. in aedibus B. G. Teubneri. Leipzig. 1888-1890. Greek text available at the Perseus Digital Library.
• Dionysus of Halicarnassus, Roman Antiquities. English translation by Earnest Cary in the Loeb Classical Library, 7 volumes. Harvard University Press, 1937-1950. Online version at Bill Thayer's Web Site
• Dionysius of Halicarnassus, Antiquitatum Romanarum quae supersunt, Vol I-IV. . Karl Jacoby. In Aedibus B.G. Teubneri. Leipzig. 1885. Greek text available at the Perseus Digital Library.
• Gaius Julius Hyginus, Fabulae from The Myths of Hyginus translated and edited by Mary Grant. University of Kansas Publications in Humanistic Studies. Online version at the Topos Text Project.
• Graves, Robert, The Greek Myths: The Complete and Definitive Edition. Penguin Books Limited. 2017. ISBN 978-0-241-98338-6, 024198338X
• Pausanias, Description of Greece with an English Translation by W.H.S. Jones, Litt.D., and H.A. Ormerod, M.A., in 4 Volumes. Cambridge, MA, Harvard University Press; London, William Heinemann Ltd. 1918. ISBN 0-674-99328-4. Online version at the Perseus Digital Library
• Pausanias, Graeciae Descriptio. 3 vols. Leipzig, Teubner. 1903. Greek text available at the Perseus Digital Library.
• Pseudo-Clement, Recognitions from Ante-Nicene Library Volume 8, translated by Smith, Rev. Thomas. T. & T. Clark, Edinburgh. 1867. Online version at theio.com
• Publius Ovidius Naso, Metamorphoses translated by Brookes More (1859-1942). Boston, Cornhill Publishing Co. 1922. Online version at the Perseus Digital Library.
• Publius Ovidius Naso, Metamorphoses. Hugo Magnus. Gotha (Germany). Friedr. Andr. Perthes. 1892. Latin text available at the Perseus Digital Library.
• Stephanus of Byzantium, Stephani Byzantii Ethnicorum quae supersunt, edited by August Meineike (1790-1870), published 1849. A few entries from this important ancient handbook of place names have been translated by Brady Kiesling. Online version at the Topos Text Project.

This article includes a list of Greek mythological figures with the same or similar names. If an internal link for a specific Greek mythology article referred you to this page, you may wish to change the link to point directly to the intended Greek mythology article, if one exists.