Does PCR use polymerase?

Yes, PCR uses polymerase.

PCR (polymerase chain reaction) is a laboratory technique used to amplify and generate many copies of a specific DNA region. Polymerase is a type of enzyme that synthesizes new strands of DNA, using the original strands as templates. DNA polymerase is an essential component for this process.

The most commonly used DNA polymerase in PCR is Taq polymerase.