Digital number may refer to:

• Numerical digit, the general concept of a digit-based numbering systems
• Specific digital number systems such as:
  • binary numeral system
  • octal
  • decimal
  • hexadecimal
• Seven-segment display character representation, the "digital" font commonly associated with LED displays on calculators
• The pixel value assigned by an analog-to-digital converter

• List of numeral systems
• Roman numerals, an example of a non-positional numeral system