The Small European Postal Administration Cooperation (SEPAC; also "...Cooperations"; also Small European Postal Administrations Cooperation) is an association of 14 European postal authorities: Åland, the Faroe Islands, Gibraltar, Greenland, Guernsey, Iceland, the Isle of Man, Jersey, Liechtenstein, Luxembourg, Malta, Monaco, San Marino and Vatican City. Luxembourg was not originally a member of SEPAC but it joined at the end of 2006. SEPAC is smaller than PostEurop.
The first joint issue of SEPAC postage stamps occurred on October 1, 2007, and the next in 2009; the sixth one was in September 2015. San Marino and Vatican City do not participate in these issues.
The following criteria are requisites for membership:
The Secretary of SEPAC is Andrée Valentine, Jersey Post's Head of Philatelic Services.