Kardashian comes in the third place after terms "election" as the champion and "iPhone 5" as the runner-up. Yahoo! web trend analyst Vera Chan says Kardashian's "notoriety has kept her at the top".
She becomes a constant hot topic due to her ongoing divorce battle with her estranged husband Kris Humphries and her high-profile romance with Kanye West.
"The 2012 elections dominated the online searches, which is amazing because if something is in the news, it's already accessible... people were really saturated by it, but even so, that was a key word that people typed throughout the year," added Chan.
Other famous females on the top 10 on the overall list are Kate Middleton, who was entangled in a topless photo scandal, Whitney Houston, whose death in early 2012 spawned a number of tributes, and Lindsay Lohan, who's facing multiple legal woes.
List of 2012 Yahoo! overall searches: