Claudio Daniel Bieler (Spanish pronunciation: [ˈklawðjo ˈβjeleɾ]; born March 1, 1984) is an Argentine footballer who plays as a forward for Agropecuario.
In 2005 Bieler made his professional debut with Primera División Argentina squad Colón de Santa Fe.
The following year he was loaned to Primera B Nacional Argentina squad Atlético Rafaela, where he led the league with sixteen goals.
In 2007, he caught the eye of fellow Argentine Claudio Borghi who signed him to Colo-Colo. Bieler attained the 2007 Clausura championship in Chile with Colo Colo. At LDU Quito, he built a reputation as a very capable striker.
On January 6, 2010 Racing Club de Avellaneda signed the striker to a three-and-a-half-year contract with 50% of the Bieler sporting rights.