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Abbreviation for "not available", etc.

This article is about the abbreviation for "not available", etc. For the computing value "Not a Number", see NaN. For other uses, see Na.

"Not available" redirects here.

For the album, see Not Available.

N/A (or sometimes n/a or N.A.) is a common abbreviation in tables and lists for the phrase not applicable,^[1][2][3][4]not available,^[3][4]not assessed,^[5] or no answer.

It is used to indicate when information in a certain table cell is not provided, either because it does not apply to a particular case in question or because the answer is not available. Such a notation can be used on many different types of forms.^[2]

The notation was in use at least as early as the 1920s, with a 1925 guide to conducting community surveys instructing those asking questions for the survey:

Some of the questions on the card are of course not applicable at al