Mirosława Kazimiera Sarna (née Sałacińska; born 8 June 1942) is a Polish former track and field athlete who competed in the long jump, short sprints and the women's pentathlon.

Sarna was born in Łódź to Stefana Sałacińska and Józef Sałaciński and studied at the city's XVIII high school.

In the long jump, she again improved her best in championship competition and her mark of 6.49 m (21 ft 3+1⁄2 in) was enough to beat the reigning Olympic champion Viorica Viscopoleanu and secure the first and only international gold medal of her career.

[5] She reached the semi-finals of the 100 m and ran the anchor leg of the relay to bring the team of Krystyna Mandecka, Danuta Jędrejek and Urszula Jóźwik to fifth in the final.

The quality of the competition was not as high at the 1973 European Athletics Indoor Championships and despite only having a mark of 6.15 m (20 ft 2 in) she was again third on the podium, this time behind Diana Yorgova and Jarmila Nygrýnová.