Progress M-4 (Russian: Прогресс М-4) was a Soviet uncrewed cargo spacecraft which was launched in 1990 to resupply the Mir space station.

[2] The twenty-second of sixty four Progress spacecraft to visit Mir, it used the Progress-M 11F615A55 configuration, and had the serial number 204.

[3] It carried supplies including food, water and oxygen for the EO-7 crew aboard Mir, as well as equipment for conducting scientific research, and fuel for adjusting the station's orbit and performing manoeuvres.

Progress M-4 was launched at 04:00:41 GMT on 15 August 1990, atop a Soyuz-U2 carrier rocket flying from Site 1/5 at the Baikonur Cosmodrome.

[4][5] During the month for which Progress M-4 was docked, Mir was in an orbit of around 368 by 403 kilometres (199 by 218 nmi), inclined at 51.6 degrees.