Kara Lynn Joyce (born October 25, 1985), is an American former competition swimmer and four-time Olympic silver medalist.

During her first year, Joyce won two individual NCAA championships (50-meter and 100-meter freestyle, short course), and helped Georgia to its third consecutive national runner-up finish.

She was the recipient of the 2006–07 Honda Sports Award for Swimming and Diving, recognizing her as the outstanding college female swimmer of the year.

[3][4] At the 2004 Summer Olympics, Joyce earned a pair of silver medals as a member of the 4×100-meter freestyle[5] and the 4×100-meter medley relays.

At the 2012 Summer Olympics in London, Joyce posted a time 25.28 seconds in Heat 8 of the 50-meter freestyle, forcing her into a swim-off with two other competitors for the sixteenth and final spot in the 50-meter semi-finals.

Spurred on by the home crowd, British competitor Amy Smith won the swimoff with a time of 24.82, ending Joyce's participation in the event.