Karolina Jarzynska-Nadolska (born September 6, 1981 in Olesnica) 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.Jarzynska set a Polish record for the event in 2013 by winning the Lódz Marathon in a time of 2:26:44 hours.