Luciano Fabián Monzón (born 13 April 1987 in Rosario) is an Argentine football defender currently playing for Olympique Lyonnais. He made his Boca Juniors debut during the Clausura 2008 tournament in Boca Juniors, and was a surprise choice for the Argentina squad for the 2008 Olympic Games later that year, this doubt was put to rest as Monzón started every match as the team went on to win gold.

Real Betis
Unsurprisingly after Monzon's performance at the Olympics he moved to Europe to play for Real Betis in La Liga for a reported €9 million after being linked with a move to Hamburg since the Olympics. It was later revealed that Monzon had moved on a loan deal and the full transfer will be completed in the summer of 2009. Monzon scored his first goal with Betis on his debut against FC Barcelona at the Camp Nou. However, Real Betis eventually lost the game 3–2.

Return to Boca Juniors
Monzon returned to Boca after his loan deal with Betis ran out in July 2009. On his return he revealed his remarkably low wage compared to other stars at Boca. On August 2010 he had two failed transfer attempts. First, he failed to move to Ukrainian side Dnipro due to a congenital heart condition and a few days later a second transfer was cancelled, this time to Serie A team Udinese admittedly by differences in payment method.

OGC Nice
On 11 July 2011 Monzón signed a 4 year contract with OGC Nice. During his only season in Nice he managed to score 10 goals, a great performance for a left defender.

Olympique Lyonnais
On August 2012, Monzón signed a 4 year contract with several time French champion Olympique Lyonnais to replace Aly Cissokho who signed for Valencia CF.
The transfer fee was €3 million and €1 million variable.