On August 24, 2020, CTT Correios de Portugal, S.A. issued a series of commemorative postage stamps featuring characters from the 2017 film Justice League. The stamps were designed by MAD Activities in Lisbon. The stamps were printed by the Belgian Post Group (Bpost).

Each character stamps has a face value of €0.91. Each stamp measures 30.6 x 60 mm. The print run is limited to 130,000 of each character. The €2 souvenir stamp is limited to 50,000 sheets. Collector sheets are numbered and limited to 4,000 copies.

CTT produced two different First Day Cover designs that include all six stamps. The first-day stamp cancellations took place at the Restauradores Post Office in Lisbon, Município II in Oporto, Zarco Post Office in Funchal, and Antero de Quental Post Office in Ponta Delgada. The Justice League collection is part of the 500 Year celebration of Portugal postal service.

CTT previously issued a series of four Superman commemorative stamps. Similar DC Comics stamp collections were produced for Batman, Joker, Harley Quinn, The Flash, and Wonder Woman.