Geraldine Aizenberg (born 31 January 1978) is an Argentine former professional tennis player.
Aizenberg reached a best singles ranking of 180 in the world. One of her best performances was a runner-up finish at the $50k Jakarta tournament in 1997. She took part in the qualifying draw for the 1998 US Open.
As a doubles player, Aizenberg won five titles on the ITF Circuit. In 1998, she appeared in the main draw of WTA Tour tournaments in Maria Lankowitz, Palermo, and Sopot.