A numeral pennant is a type of flag or pennant that is used to represent a numerical value.

In shipping and maritime contexts, numeral pennants are part of the International Code of Signals, a system of signals used for communication between vessels. The numeral pennants in this system are a set of flags representing the digits 0 to 9. These flags are used to communicate numerical information in a standardized and internationally understood manner.

The numeral pennants can be hoisted alone or in combination to represent multi-digit numbers.