Nimbus Sans is a sans-serif typeface created by URW++, based on Helvetica.

It is a version using URW++ font source. The family supports Western Europe, East Europe, Turkish, Baltic, and Romanian languages.

The font names ending with (D) have slightly lighter font weights and tighter spacing.

Nimbus Sans L is a version of Nimbus Sans using Adobe font sources. It was designed in 1987. The family includes 17 fonts in 5 weights and 2 widths, with Nimbus Sans L Extra Black only available in condensed roman format.

A subset of Nimbus Sans L, which includes regular and bold weight fonts in all widths and styles, were released under the GPL and AFPL in Type 1 format in 1996^{[1][2][3][4][5][6]} and LPPL in 2009,^[7] and is one of several freely licensed fonts offered by URW++.

Although the characters are not exactly the same, Nimbus Sans L has metrics almost identical to Helvetica and Arial. Nimbus Sans L is one of the Ghostscript fonts, a set of free alternatives to the 35 basic PostScript fonts (which include Helvetica).^{[8][9][10][11]}

It is a standard typeface in many Linux distributions.^[12] It was used as default font in OpenOffice.org Calc and Impress in some Linux distributions (e.g. Ubuntu - up to version 8.10; since Ubuntu 9.04 the default font was changed to Liberation Sans).

It is a version using Linotype's Stempel Studio source, based on Neue Helvetica, but without the extended width.

While the design of the characters is based on Neue Helvetica, the two typefaces differ metrically: Nimbus Sans Novus has smaller x-height and is narrower at the same font size (but not at the same x-height).

The weight systems of the two typefaces also drastically differ. For instance, the Regular weight of Nimbus Sans Novus resembles the Light weight of Neue Helvetica, while the Medium weight of Nimbus Sans Novus resembles the Regular Neue Helvetica design. Nimbus Sans Novus has a Semibold weight, but Neue Helvetica does not.

The font names ending with (D) have tighter letter spacing.

• Nimbus Roman No9 L
• Nimbus Mono L
• Free software Unicode typefaces