Moscow City Duma District 40 is one of 45 constituencies in Moscow City Duma. Currently the district covers outer parts of Western Moscow.
The district has been represented since 2019 by United Russia member Tatyana Batysheva, a pediatric neurologist and three-term Moscow City Duma member, who moved from the neighbouring District 42 to succeed retiring United Russia three-term incumbent and businessman Aleksandr Milyavsky.