Wiesław Z. Wiśniewski (May 2, 1931 in Poland – February 28, 1994 in Tucson, Arizona, United States) was a Polish astronomer.
[citation needed] He joined the staff of the Cracow Observatory at Jagiellonian University as a research assistant in 1953.
Wisniewski was heavily involved in astronomical photometry which he learned while working with Harold Johnson at the Lunar and Planetary Laboratory.
At the time of his death, he was actively planning to participate in a network of telescopes to observe the impacts of comet Shoemaker-Levy 9 on Jupiter.
He had obtained one of the early high resolution images of the comet on March 28, 1993 while using the Steward Observatory 90 inch telescope.