Witnesses

At any wedding ceremony in Poland, two witnesses are required. Each witness must be at least 18 years old.

Witnesses must present valid identification documents (e.g., national ID or passport).

Tradition suggests choosing religious witnesses of different genders as role models for the couple, though this is not a strict requirement.
Witnesses must be at least 18 years old and have valid identification.
Witnesses, along with the couple, sign the marriage certificate, typically in the sacristy before the ceremony.
It is traditional for witnesses to be able to participate in confession and communion, but this is not mandatory.
Witnesses do not need to be of the same denomination as the church where the wedding takes place or to have received confirmation.

Witnesses are not legally required at the humanist ceremony since the legal marriage signing occurs at the civil ceremony at the Register office (Urząd Stanu Cywilnego, USC).
However, couples may choose to have witnesses present for symbolic purposes.