| Diomidis Kyriakos | |
| Office: | Prime Minister of Greece |
| Term Start: | 27 March 1863 |
| Term End: | 29 April 1863 (o.s.) |
| Predecessor: | Zinovios Valvis |
| Successor: | Benizelos Roufos |
| Birth Date: | 1811 |
| Birth Place: | Spetses, Ottoman Empire |
| Death Date: | 1869 (aged 57-58) |
| Death Place: | Pisa, Italy |
Diomidis Anastasiou Kyriakos (1811, Spetses – 1869, Pisa) was a Greek author, politician and Prime Minister of Greece.
Kiriakos was born in 1811 on the island of Spetses to a family of Arvanite origin.[1] He was the younger brother of Ioannis Kyriakos, a vice-admiral who was killed in the siege of Messolonghi. He studied law at the universities of Pisa and Paris. In 1835, Kyriakos became a public prosecutor of the Court of First Instance. In 1843, he helped draft the Constitution of Greece. In 1851, he became a professor of constitutional law and, in 1862, a member of the committee to draft a new constitution. The following year, Kyriakos became the Minister of Religion and Education and, between April and May 1863, he became the Prime Minister of Greece. Kyriakos authored several books on law and history. He died in Italy in 1869.