Janusz Andrzej Pęcherz (born 6 November 1954) is a Polish politician.

He was elected to the Senate of Poland (10th term) representing the constituency of Kalisz.

He graduated from the Faculty of Chemistry at the Lodz University of Technology.

In the 2006 local government elections, he successfully ran for re-election, running with the support of several local parties and winning the first round.

In 2010, he again won the third term in the first round with about 51% of the vote.