Ditto refers to something that was mentioned previously or above, spoken or written to avoid repeating the statement. It may also refer to:
In printing:
* Ditto machine, a type of small printing press.
* The sheets of paper printed by a ditto machine, or another copy machine.
In media and popular culture:
* Ditto (convention), an annual science fiction fanzine convention
* Ditto (1937 film), a 1937 film starring Buster Keaton
* Ditto (2000 film), a 2000 South Korean film
* Ditto (Pokémon), a Pokémon species
* "Ditto" (song), a song by American singer Cassie
* Ditto, a character in the ...