Worldwide, Δημοσθένης (Dimosthenis 
, Demosthenes 
, Δημοσθένης ) is a common masculine first name. The forename Δημοσθένης is habitual in Greece, where it is a common male name, Philippines, where it is quite a rare male name, and Brazil, where it is a rare boy's name. Also, Δημοσθένης is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Dimosthenis | Cyprus, Philippines, United States, Brazil, Greece |
| Demosthenes | Philippines, United States, Brazil, Greece, Haiti |
| Δημοσθένης | Greece |
Demosfen, Demosten, Demostene, Demostenes, Demosteni, Demosteno, Dimos, Démosthène, Δήμος, Демосфен, and Димосфенис
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δημοσθένης Athenian statesman and orator (384-322 BC), GR (b. 384) |
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| δημοσθένης Athenian general during the Peloponnesian War, GR (b. 412) |
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| δημοσθένης δόγκας Greek politician, GR (b. 1801) |
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δημοσθένης διαλέτης Greek politician (1869-1954), GR (b. 1869) |
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δημοσθένης βουτυράς Greek writer, GR (b. 1872) |
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| δημοσθένης μισιτζής Greek playwright, GR (b. 1826) |
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| δημοσθένης βαλαβάνης Greek poet, GR (b. 1829) |
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| δημοσθένης αλεξιάδης Greek actor, GR (b. 1839) |
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| δημοσθένης χατζηπαύλου Cypriot mayor, CY (b. 1845) |
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δημοσθένης μπριστογιάννης Greek lawyer, GR (b. 1898) |
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| δημοσθένης τσιβανόπουλος GR (b. 1838) |
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δημοσθένης λιγδόπουλος Greek journalist, GR (b. 1898) |
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| δημοσθένης ανδρεάδης 1869-1952 (b. 1869) |
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| δημοσθένης κούρτοβικ Greek journalist and publisher (1870-1929), GR (b. 1870) |
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| δημοσθένης ρίζος Greek journalist, publisher and politician, GR (b. 1875) |
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Ρόκκος, Μιχαλόπουλος, Κυριακόπουλος, Ευαγγελίδης, Σαμαράς, Μπακογιάννης, and Κατσαντώνης