Undeciphered writing systems

Yellow River civilization

• Jiahu symbols – Peiligang culture, from China, c. 6600 - 6200 BC.
• Damaidi symbols - Damaidi, from China, earliest estimated dates range from Paleolithic to c. 3000 years ago
• Dadiwan symbols - Dadiwan, from China, c. 5800 - 5400 BC.
• Banpo symbols – Yangshao culture, from China, 5th millennium BC.
• Jiangzhai symbols - Yangshao culture, from China, 4th millennium BC.
• Dawenkou symbols - Dawenkou culture, c. 2800 - 2500 BC.
• Longshan symbols - Longshan culture, from China, c. 2500 - 1900 BC.

Yangtze civilization

• Wucheng symbols - Wucheng culture, from China, c. 1600 BC

Other areas

• Sawveh - Guangxi, from China; possible proto-writing or writing

• 
  Jiahu symbols
• 
  Banpo symbols
• 
  Longshan symbols
• 
  Sawveh

• Dispilio Tablet – Neolithic Europe, from Greece, c. 5202 BC.
• Vinča symbols – Neolithic Europe, from Central Europe and Southeastern Europe, c. 4500 BC - 4000 BC.

• 
  Dispilio tablet
• 
  Vinca symbols

• Indus script, c. 3300 BC to 1900 BC.
• Vikramkhol inscription, c. 1500 BC
• Megalithic graffiti symbols, c. 1000 BC - 300 AD, possible writing system and possible descendant of Indus script
• Pushkarasari script – Gandhara, 3rd century BC to 8th century AD.
• Shankhalipi, c. 4th to 8th century

• 
  Indus script
• 
  Vikramkhol inscription
• 
  Pushkarasari script
• 
  Shankhalipi

• Proto-Elamite, c. 3200 BC
• Linear Elamite, c. 2200 BC
• Wadi el-Ħôl script, c. 1800 BC, likely an abjad.
• Byblos syllabary – the city of Byblos, c. 1700 BC
• Cypro-Minoan syllabary, c. 1550 BC

• 
  Proto-Elamite script
• 
  Linear Elamite
• 
  Wadi el-Hol script
• 
  Byblos syllabry
• 
  Cypro-Minoan syllabry
• 
  Sidetic script

• Ba–Shu scripts, 5th to 4th century BC.
• Khitan large script and Khitan small script – Khitan, 10th century, not fully deciphered.
• Tujia script

• 
  Ba script
• 
  Khitan large script
• 
  Khitan small script
• 
  Tujia script

• Singapore Stone, a fragment of a sandstone slab inscribed with an ancient Southeast Asian script, perhaps Old Javanese or Sanskrit. At least 13th century, and possibly as early as 10th to 11th century

• 
  Singapore Stone

• Issyk inscription, Kazakhstan, c. 4th century BC

• 
  Issyk inscription

• Cretan hieroglyphs, c. 2100 BC.
  • Linear A and Cretan hieroglyphs are both believed to be an example of the Minoan language. Several words have been decoded from the scripts, but no definite conclusions on the meanings of the words have been made.
• Phaistos Disc, c. 2000 BC.
• Linear A, c. 1800 BC, a syllabary
• Grakliani Hill script - Grakliani Hill, c. 11th - 10th century BC
• Paleohispanic scripts
  • Southwest Paleohispanic script, from c. 700 BC
• Sitovo inscription
• Alekanovo inscription, c. 10th - 11th century
• Rohonc Codex
• Folio 7r-v of British Library manuscript MS 73525, pre-1550, possibly liturgical.[1]
• Voynich manuscript, carbon dated to the 15th century.[2]
• Some scholars consider the corpus of Pictish symbol stones to be an undeciphered writing system[3]

• 
  Cretan hieroglyphs
• 
  Linear A
• 
  Phaistos disc
• 
  Southwest Paleohispanic Script
• 
  Sitovo inscription
• 
  Folio 7r of MS 73525
• 
  Folio 7v of MS 73525

• The Starving of Saqqara - possibly dating to pre-dynastic Egypt
• Ancient inscriptions in Somalia, According to the Ministry of Information and National Guidance of Somalia, inscriptions can be found on various old Taalo Tiiriyaad structures. These are enormous stone mounds found especially in northeastern Somalia. Among the main sites where these Taalo are located are Xabaalo Ambiyad in Alula District, Baar Madhere in Beledweyne District, and Harti Yimid in Las Anod District.[4]
• Numidian language (although the script, Libyco-Berber, has been almost fully deciphered, the language has not)
• Meroitic language, c. 300 BC to 400 AD, though the Meroitic script is largely deciphered, the underlying language is not.
• Ṣǝḥuf ʾǝmni inscription (although written in the well-known South Arabian script, the language has not yet been identified)

• 
  Libyco-Berber
• 
  Meroitic script

• Ikom monoliths – Cross River State, Nigeria
• Eghap script – Cameroon, c. 1900, partially deciphered.

• 
  Ikom monoliths

• Khipu – Inka Empire and predecessor states, like the Wari Empire or the Caral-Supe Civilization, c. 2600 BC - 17th century, with some variants still in use today; it could possibly be a writing system or a set of writing systems.

• 
  Khipu

• Olmec – Olmec civilization, c. 600 BC, possibly the oldest Mesoamerican script.
• Epi-olmec, c. 400 BC–500 AD, apparently logosyllabic.
• Zapotec – Zapotec. Possibly logosyllabic, c. 500 BC–700 AD.
• Teotihuacan. Possibly descended from the Zapotec script, and itself being the probable ancestor of the Post-classic Mixtec and Aztec scripts, c. 100 BC - 700 AD.
• Mixtec – Mixtec, 12th–14th century, the pictographic elements which accompany the script are well-understood, but semantic and linguistic components of the script proper are less well known.

• 
  Isthmian script
• 
  Zapotec script
• 
  Mixtec Script