The Collaborative International Dictionary of English v.0.48:
Licenser \Li"cens*er\ (l[imac]"sens*[~e]r), n. One who gives a license; as, a licenser of the press. [1913 Webster]WordNet (r) 3.0 (2006):
licenser n 1: an official who can issue a license or give authoritative permission (especially one who licenses publications)