Elwira Seroczyńska (1 May 1931 – 24 December 2004) was a Polish speed skater.

Seroczyńska was born as Elwira Potapowicz in Wilno, Poland (now Vilnius, Lithuania). A graduate of the State Administrative and Economic School in Elbląg (1951), she and became Polish Allround Champion for the first time in 1952. She would eventually become Polish Allround Champion a total of five times, last in 1963. Apart from her allround titles she won 17 distance titles (some also count the out of competition 1953 1000m race as a title) and established 16 official Polish distance records and one combination record. Curiously several combinations skated at Polish championships were never recognised as being a Polish record due to the combination of distances skated. During her skating career she was member of Stal Elbląg (1950–1953), FSO-Stal Warszawa (1954–1957) and Sarmata Warszawa (1957–1964). At the 1960 Winter Olympics, she won a silver medal on the 1,500 m. At the 1962 World Championships in Imatra, she won a Gold Medal on the 500m. After her skating career she studied at the Warsaw Academy of Physical Education (1972), where she received a master's degree and became trainer of the Polish skating team. She died in London, United Kingdom at the age of 73.