Prince Dmitry Mikhailovich Golitsyn or Gallitzin (Russian: Дмитрий Михайлович Голицын, IPA: [ˈdmʲitrʲɪj mʲɪˈxajləvʲɪdʑ ɡɐˈlʲitsɨn]; German: Demetrius Michalowitsch von Gallitzin; 15 May 1721 – 19 September 1793) was a Russian diplomat, philanthropist and art collector from the Golitsyn family.

Catherine the Great bestowed on him the Order of St. Andrew for negotiating the First Partition of Poland with Emperor Joseph II.

The prince was acclaimed for having returned to Russia the lands annexed by his patrilineal ancestor, Grand Duke Gediminas.

In the winter of 1782, Wolfgang Amadeus Mozart was engaged for all the concerts given by Gallitzin who "placed his carriage at my disposal both going and returning, and treated me in the handsomest manner possible".

[4] Gallitzinberg is the hill near Vienna where the Russian ambassador built his residence (with an artificial Roman ruin and a round temple still standing).