Philately is the study of stamps and postal history and other related items. Philately involves more than just stamp collecting, which does not necessarily involve the study of stamps. It is possible to be a philatelist without owning any stamps.[1] For instance, the stamps being studied may be very rare, or exist only in museums.
Filateli adalah aktivitas atau hobi mengumpulkan prangko dan benda-benda pos lainnya seperti Sampul Hari Pertama. Pengumpulan benda-benda pos itu kebanyakan mengutamakan edisi lama, meski edisi baru juga ikut dikumpulkan. Semakin tua usia benda pos tersebut, maka harganya semakin tinggi. Di Indonesia, kegiatan Filateli mendapat dukungan dari PT Pos Indonesia. Disetiap kantor pos besar terdapat loket atau ruang filateli.