Karolina Jarzyńska-Nadolska (born September 6, 1981 in Oleśnica) is a Polish long-distance runner. She competed in the marathon at the 2012 Summer Olympics, placing 36th with a time of 2:30:57.
She also represented her country at the 2010 European Athletics Championships, but did not finish the marathon distance. She took a career break from mid-2014 to late-2015 to have a child and returned to competition in late 2015.
Jarzyńska set a Polish record for the event in 2013 by winning the Łódź Marathon in a time of 2:26:44 hours.