On November 9, 2021, the Algerian Post issued a series of postage stamps dedicated to traditional saddle making.
On November 3, 2021, the Isle of Man Post issued a series of postage stamps in honor of famous singer Sir Barry Gibb.
On November 2, 2021, Serbia Post issued a postage stamp in honor of the Serbian national holiday Slava.
On October 25, 2021, Belgium Post issued the traditional 2-stamp Christmas series.
On October 19, 2021, Australia Post issued a series of postage stamps to commemorate the 150th anniversary of the Royal Society To Prevent Cruelty To Animals (RSPCA)
On September 8, 2021, the Czech Post issued a miniature sheet in the series Nature Conservation: Milovice
On 4 August 2021, the Hungarian Post issued a postage stamp in honor of the XII Driving European Championship in Budapest.
On June 14, 2021, the Netherlands Post issued a miniature sheet on the topic "Experience Nature. Duin en Kruidberg".
On May 17, 2021, the United States Post issued a series of stamps featuring farm animal breeds that could be considered national treasures.
On January 14, 2021, Royal Mail released a series of stamps dedicated to National Parks.