List of ciphertexts
Some famous ciphertexts, in chronological order by date, are:
| Year of origin | Ciphertext | Decipherment status |
| 179–180 | Papyrus Oxyrhynchus 90 | |
| 1400s | Voynich manuscript | |
| 1500s | Rohonc Codex | |
| 1586 | Babington Plot ciphers | |
| 17th century | Great Cipher | |
| 1730 | Cryptogram of Olivier Levasseur | |
| 1760–1780 | Copiale cipher | |
| 1843 | "The Gold-Bug" cryptogram by Edgar Allan Poe | |
| 1882 | Debosnys cipher | |
| 1885 | Beale ciphers | |
| 1897 | Dorabella Cipher | |
| 1903 | "The Adventure of the Dancing Men" code by Arthur Conan Doyle | |
| 1917 | Zimmermann telegram | |
| 1918 | Chaocipher | |
| 1918–1945 | Enigma machine messages | |
| 1939 | D'Agapeyeff cipher | |
| 1939–1945 | Purple cipher machine messages | |
| 1941 | Lorenz SZ42 machine cipher messages | |
| 1944 | Pigeon NURP 40 TW 194 | |
| 1948 | Tamam Shud case | |
| 1950 | James Hampton's script | |
| 1969 | Zodiac Killer ciphers | |
| 1977 | The Magic Words are Squeamish Ossifrage | |
| 1983 | Decipher | |
| 1986 | Decipher II | |
| 1987 | Decipher III | |
| 1990 | Kryptos | |
| 1991 | Scorpion ciphers | |
| 1999 | Ricky McCormick's encrypted notes | |
| 2006 | Smithy code, embedded within the 2006 judgment on The Da Vinci Code case | |
| 2012–2016 | Cicada 3301 puzzles | |
| 2015 | 11B-X-1371 | |
| 2020 | Noita Eye Messages |