Commissioner

1. A person who has a commission or warrant to perform some office, or execute some business, for the government, corporation, or person employing him; as, a commissioner to take affidavits or to adjust claims.
2. An officer having charge of some department or bureau of the public service.
Commissioner of deeds ,
an officer having authority to take affidavits, depositions, acknowledgment of deeds, etc., for use in the State by which he is appointed.
County commissioners ,
certain administrative officers in some of the States, invested by local laws with various powers in reference to the roads, courthouses, financial matters, etc., of the county.