Aronian has long been Armenia's strongest player, but now represents the US.
World U12 Champion 1994, World Junior Champion 2002, Champion of Armenia 2002.
Played in the World Championship Knockout Tournament 2004; won the World Cup of 2005 and 2017; played in the World Championship Tournament 2007 and the World Cups of 2007, 2013 & 2015; won the Grand Prix Series 2008-2010; Candidate in 2007, 2011, 2013, 2014 & 2016.
One of the great team players. He played for Armenia in the Olympiads in 1996 (for Armenia 2), 2004 (winning team bronze), 2006, 2008 (team gold), 2010 (individual silver and team gold), 2012 (team and individual gold board one) & 2014 . Played for Armenia in the European Team Championships of 1999 (team gold), 2005, 2007 (team silver), 2011 (individual silver board one), 2013 (individual bronze board one) & 2015 (individual silver board one, and team silver). Played for Armenia in the World Team Championships of 2005 (team bronze, individual silver board one), 2010 (individual silver board one), 2011 (team gold, individual silver board one), 2013 (individual gold board one) & 2015 (team bronze, individual gold board one). Won team gold in the European Club Cup in 2005 & 2015. Won team and individual gold in the Russian Premier League in 2005 (board three) and 2015 (board two), and team bronze in 2006.
Aronian's best tournament results were wins at the Karabakh International 2005, Linares 2006, Sochi Grand Prix Tournament 2008, Nalchik Grand Prix Tournament 2009, Bilbao 2009 & 2013, Wijk aan Zee 2012 & 2014, Alekhine Memorial 2013, Sinquefield Cup 2015. Grenke Chess Classic 2017, Norway Chess 2017, and an equal first place finish at the 2018 Sinquefield Cup with Carlsen and Caruana. In addition he was equal first at the International Neckar Opens in 2003 & 2004, Gibraltar in 2004 & 2005, Tal Memorial 2006 & 2010, and Corus in 2007 & 2008.