No — there is currently no reliable public source that confirms Diego Forlán is left-handed.

Diego Forlán is a former Uruguayan professional footballer who played as a forward. He is widely regarded as one of Uruguay's greatest players and a prolific goal scorer.

His illustrious career saw him play for top clubs across Europe, including Manchester United, Villarreal, and Atlético Madrid, where he achieved significant success and won numerous individual and team accolades.

Forlán was a key member of the Uruguay national team, representing his country in multiple FIFA World Cups and Copa América tournaments. He famously won the Golden Ball award as the best player at the 2010 FIFA World Cup.

Known for his powerful long-range shots and exceptional finishing ability, Forlán was also recognized for his sportsmanship and leadership on the field. After retiring from playing, he embarked on a coaching career.