Leandro Denis "Tati" Mercado (born 15 February 1992) is a motorcycle racer from Argentina who competed in the 2022 Superbike World Championship aboard a Honda CBR1000RR for Team MIE Racing.

He is best known for winning the National title of the AMA Supersport Championship in 2009 and the FIM Superstock 1000 Cup in 2014.

[4] In 2012 Mercado raced in the Superbike World Championship for eight rounds in the first half of the season, before moving back to the FIM Superstock 1000 Cup.

[4] For the following two seasons, he continued competing in the Superstock category, finishing fourth in 2013 with Kawasaki machinery, and winning the 2014 title on a Ducati 1199.

[4] For 2015, he returned to the Superbike World Championship full time,[5] finishing eighth in the final standings.