Pierre Séguier was a French statesman, chancellor of France from 1635.

The Chancellor of France, also known as the Grand Chancellor or Lord Chancellor, was the officer of state responsible for the judiciary of the Kingdom of France. The Chancellor was responsible for seeing that royal decrees were enrolled and registered by the sundry parlements, provincial appellate courts. However, since the Chancellor was appointed for life, and might fall from favour, or be too ill to carry out his duties, his duties would occasionally fall to his deputy, the Keeper of the Seals of France.