Assembly of Nobility or Dvoryan Assembly ("Дворянское Собрание") was the self-government body of the social class ("сословие") of dvoryanstvo in Imperial Russia during 1785-1917. The Nobility Assemblies were at the guberniya and uyezd levels. Sometimes it is also translated as Gentry Assembly.

The chair of a Nobility Assembly was called Gubernia (District) Marshal of Dvoryanstvo (or Marshal of Nobility) (губернский (уездный) предводитель дворянства). These Assemblies governed both the dvoryanstvo itself and took part in the governing of local affairs of the whole society. After the Emancipation reform of 1861 in Russia and subsequent reforms their purpose became mostly affairs of dvoryanstvo.

This institution ceased to exist in Russia after the October Revolution.

After the collapse of the Soviet Union, in 1990 the desendants of Russian nobility founded the Assembly of Russia's Nobility, a public non-political organization.