Tomasz Bernard Peta (Russian: Томаш Бернард Пэта; born on 20 August 1951 in Inowrocław, Poland) is the current Catholic Archbishop of the Metropolitan Archdiocese of Saint Mary in the city of Astana, and the President of the Bishops' Conference of Kazakhstan from May 19, 2003.

On 1 April 2008 Pope Benedict XVI appointed[7] the Metropolitan Tomasz Peta to the Congregation for the Clergy, dealing with life and work of the priests.

On June 10, 2019, Peta, along with cardinals Raymond Leo Burke and Jānis Pujats, in addition to Astana Auxiliary Bishop Athanasius Schneider and fellow Kazach archbishop Jan Paweł Lenga, published a 40-point "Declaration of Truths" claiming to reaffirm traditional Church teaching.

Lamenting the nearly 200 deaths caused by the violence, he instructed his priests to celebrate mass on January 13 and "to pray for victims and peace in our beloved Kazakhstan.

The archbishop himself celebrated mass for that intention in the cathedral, and said "On Sunday, after the Angelus prayer, Pope Francis spoke about the incidents in Kazakhstan.