Lily Jovanka Pérez San Martín (born 10 May 1963) is a Chilean publicist and politician. She served a councilor for La Florida from 1992 to 1996, a national deputy for District 26 from 1998 to 2006, a deputy for District 36 from 2008 to 2010, and a senator for Constituency 5 from 2010 to 2018. In addition, from 2014 to 2018 she was the president of the now-defunct Amplitude party.