The German Archaeological Institute (German: Deutsches Archäologisches Institut, DAI) is a research institute in the field of archaeology (and other related fields). The DAI is a "federal agency" under the Federal Foreign Office of Germany.

The Institute comes under the umbrella of the Federal Foreign Office of Germany. It has a legal right to academic self-administration but is also an important component of Germany's cultural, artistic, and foreign policy programmes. The DAI has often laid the groundwork for the establishment of interstate relationships. It maintains relationships with many academic organisations around the world. Its members include German archaeologists, German representatives of affiliated disciplines, and several important foreign researchers. It is not possible to apply for membership; it can only be received by co-option. Selection as a corresponding or ordinary member is accordingly a special honour and mark of academic recognition. The DAI maintains research offices in many countries around the world and a number of commissions focussed on specific topics.

The DAI carries out archaeological and historical research worldwide and therefore often works with scholars of host countries and other international scholars. Traditionally, the Mediterranean region and the Near East are the main areas of activity, but since 1979, the institute's activities have transcended these regions and are carried out worldwide. The institute carries out excavations, expeditions, and other projects. Since 2009, the DAI has established "centres of excellence in research and teaching" in the context of the "Foreign Academic Policy Initiative" (Initiative Außenwissenschaftspolitik). The institute is among the internationally recognised Top Research Institutes. To maintain this standard, the DAI receives special research from the Federal government's Genshagener Programme.

In 2019, it was decided to create a "KulturGutRetter-Mechanismus" under the leadership of the German Archaeology Institute in partnership with the Technisches Hilfswerk, the Römisch-Germanisches Zentralmuseum, and other partners. In crisis situations, it should provide mechanisms for the protection, maintenance, and salvage of artefacts and buildings.

It is a goal of the DAI to support deeper mutual understanding between cultures. It seeks to make a contribution to intercultural dialogue. Additionally, through altruistic research of other cultures and academic interaction with other nations, it is meant to contribute positively to Germany's reputation in the world.

The German Archaeological Institute was established in the early days of archaeology as a scholarly discipline. Even before its establishment, there were learned societies, like the Accademia Etrusca, focused on the material remains of ancient peoples, but they were antiquarian in approach. The first moves toward an archaeological organisation took place in Rome in the 1820s, with the establishment of the Roman Hyperboreans, a circle of European academics, artists, and diplomats. They realised that the new knowledge and artefacts then being discovered at an ever-accelerating rate required international academic collaboration. The early attempt to establish a "Roman-Hyperborean Society" to facilitate that collaboration are commemorated in the logo of the DAI, which depicts a Hyperborean griffin. On 2 January 1829, the archaeologist Eduard Gerhard, the Prussian envoy Christian Charles Josias von Bunsen, the Hannoverian chargé d'affairs in Rome, August Kestner, the commissario della antichità Carlo Fea, and the Danish sculptor Bertel Thorvaldsen announced the foundation of an Instituto di corrispondenza archeologica (Italian for "institute of archaeological correspondence"). The founding event took place on 21 April 1829, the mythical foundation date of Rome. The Prussian crown prince Frederick William agreed to be the society's patron. The first president was the French ambassador to Naples, Pierre Louis Jean Casimir de Blacas. Administration was entrusted to a board of secretaries, led by a General Secretary. Among the founding members were Otto Magnus von Stackelberg and Theodor Panofka. After de Blacas' death in 1839, Klemens von Metternich was appointed as president in 1841. After Metternich's death in 1859, political and social representation ceased to play an important role in the organisation.

Initially, the Institute's goal was to gather and publish all archaeological discoveries relating to Classical Antiquity. The focus was on Greek and Roman antiquities, but finds from Egypt and the Near East were not excluded. There were two types of membership: corresponding members (socii) and ordinary members (membri). The socii ("fellows") were intended to form a dense network covering the whole of Europe. They were served by sections in Italy, Germany, France, and England. The Paris section under the leadership of Honoré Théodoric d'Albert de Luynes was particularly active in these early years. The membri were a smaller group who undertook long-term duties and were obliged to produce academic contributions and to review publications. The basic distinction is retained to this day.

The foundation of the institute was a significant milestone for the professionalisation of archaeology. For the first time, efforts were made to gather and publish all archaeological finds, rather than focusing on the significance of individual monuments in isolation. The Bullettino degli Annali dell'Instituto di Corrispondenza Archeologica was the first archaeological periodical, and created the possibility for new discoveries to be continually published. The creation of a large reading library, open to all researchers, was another new development. Along with this a continuously active research centre with public lectures and discussions was created for the first time. All of these innovations made the Roman institute a centre of archaeological research in Europe and a model for the later national institutes created in the Mediterranean and Near East.