The National Archaeological Institute with Museum (NAIM) is a Bulgarian science-research institute in Sofia, part of the structure of the Bulgarian Academy of Sciences (BAS).

It was founded in 1948 by the merger of two organizations - the Archaeological Institute and the Archaeological Museum. The Archaeological Museum is the oldest in Bulgaria, officially in existence since 1892 (SG 33 / 12.02.1893).

They are housed in the building of the former Buyuk mosque (1474) at 2 Saborna Str. The institute was founded in 1921 by the decree of Tsar Boris III (SG 83 / 15.07.1921).

National Archaeological Museum in 2015

The Institute is engaged in archaeological research on the territory of Bulgaria. Its scientific staff consists of 67 people (2012).