Lists of unsolved problems

A list of unsolved problems may refer to several conjectures or open problems in various scientific fields:

• Unsolved problems in biology
• Unsolved problems in chemistry
• Unsolved problems in computer science
• Unsolved problems in economics
• Unsolved problems in geoscience
• Unsolved problems in information theory
• Unsolved problems in linguistics
• Unsolved problems in mathematics
• Unsolved problems in medicine
• Unsolved problems in philosophy
• Unsolved problems in physics
• Unsolved problems in statistics

Grouped by money prize

• Millennium Prize Problems
• One Million Dollar Paranormal Challenge

See also

• List of ciphertexts