Mirosław Hermaszewski was a Polish cosmonaut, fighter plane pilot, and Polish Air Force officer. He became the first, and at the time of his death in December 2022, the only, Polish national in space when he flew aboard the Soviet Soyuz 30 spacecraft in 1978. He was the 89th human to reach outer space.

Soyuz 30 was a 1978 crewed Soviet space flight to the Salyut 6 space station. It was the sixth mission to and fifth successful docking at the orbiting facility. The Soyuz 30 crew were the first to visit the long-duration Soyuz 29 resident crew.