Wis. Stat. § 140.10: Notarial act in this state.

(1) A notarial act may be performed within this state by any of the following persons of this state:

(a) A notary public of this state.

(b) A judge, clerk, or deputy clerk of a court of record.

(c) A court commissioner.

(d) A register of deeds or deputy register of deeds.

(e) A municipal judge.

(f) A county clerk or deputy county clerk.

(2) The signature and title of an individual performing a notarial act in this state are prima facie evidence that the signature is genuine and that the individual holds the designated title.

(3) The signature and title of a notarial officer described in sub. (1) conclusively establish the authority of the officer to perform the notarial act.