Progress 42 (Russian: Прогресс 42) was a Soviet unmanned Progress cargo spacecraft, which was launched in May 1990 to resupply the Mir space station.

Progress 42 launched on 5 May 1990 from the Baikonur Cosmodrome in the Kazakh SSR.

[2][4] Progress 42 docked with the aft port of the Kvant-1 module of Mir on 7 May 1990 at 22:45:03 UTC, and was undocked on 27 May 1990 at 07:08:58 UTC.

[3][5] It remained in orbit until 27 May 1990, when it was deorbited.

[3][5] This article about one or more spacecraft of the Soviet Union is a stub.