The Ministry of the Interior is a government department of Greece. On 15 September 1995, it was merged with the Ministry of the Prime Minister's Office to form the Ministry of the Interior, Public Administration and Decentralization. On 19 September 2007, it was merged with the Ministry of Public Order and reverted to its original name. The merger was reversed on 7 October 2009, when the Ministry of the Interior, Decentralization and Electronic Governance was formed. On 27 June 2011, a separate Ministry of Administrative Reform and Electronic Governance was created, and the Ministry of the Interior again reverted to its original name. On 27 January 2015, the two were merged with the Ministry of Public Order and Citizen Protection to form the Ministry of the Interior and Administrative Reorganization. A separate Ministry of Administrative Reorganization was created on 5 November 2016, and the Ministry of the Interior reverted to its original name for the third time in a decade. A separate Ministry of Citizen Protection was also re-established on 29 August 2018. The Ministry of Administrative Reorganization was reabsorbed by the Ministry of the Interior on 9 July 2019.

The coat of arms of Greece or national seal of Greece comprises a white Greek cross on a blue escutcheon, surrounded by two laurel branches. It has been in use in its current form since 1975. Prior to the adoption of the current coat of arms, Greece used a number of different designs, some of which were not heraldic; the first heraldic design was introduced in 1832 and its main element, the blue shield with the white cross, has been the base for all other national coats of arms since then. The design is a heraldic representation of the Greek national flag adopted in 1822, which featured a white cross on a blue field.