Moscow City Duma District 42 is one of 45 constituencies in Moscow City Duma.

Currently the district covers inner parts of Western Moscow.

The district has been represented since 2024 by United Russia deputy Irina Slutskaya, an Olympic figure skater and former Moscow Oblast Duma member, who succeeded one-term Communist incumbent Yekaterina Yengalycheva after Yengalycheva was deselected at the party convention.

2014–2024: Dorogomilovo, parts of Fili-Davydkovo, Ramenki[2] The district was created prior to the 2014 election, after Moscow City Duma had been expanded from 35 to 45 seats.

It covers parts of Western Moscow.