Kartika Sari Henry is appointed as Secretary-General of Wikimedia Indonesia (period 2011-2012). In mid 2011 Kartika assess Wikimedia Indonesia - Lontar Foundation project writing drive, improve training module for beginners in editing wikipedia in Indonesian language and organize public meet up to test the module.
Kartika begin her contribution in Indonesian language Wikipedia on March 2010 as a participant of Free Your Knowledge 2010 writing competition. Kartika was awarded first place in the writing competition and receive a travel scholarship to attend Wikimania 2010 in Gdansk, Poland. Her video and picture in 2010 later on being used by the Wikimedia Foundation as one of the yearly fund rising plea that year.