Myriad is a humanist sans-serif typeface designed by Robert Slimbach and Carol Twombly for Adobe Systems.

Myriad is easily distinguished from other sans-serif fonts due to its "y" descender (tail) and slanting "e" cut.

Its letterforms are open rather than "folded-up" on the nineteenth-century grotesque sans-serif model, and its sloped form is a "true italic" based on handwriting.

[2][5][6] The Multiple Master format was not well supported by third-party applications, and so most releases of Myriad have been in the form of separate font files.

The family is bundled as part of the Adobe Web Type Pro font pack.

Compared to Myriad MM, it added support for Latin Extended, Greek, and Cyrillic characters, as well as oldstyle figures.

Myriad Pro originally included thirty fonts in three widths and five weights each, with complementary italics.

MyriadCAD is included in Adobe Reader 9 and is thought to be an implementation of the ANSI CAD lettering.

[13] Five weights of Myriad Arabic (which include Latin-alphabet characters) were licensed by Apple for inclusion with macOS, but must be manually enabled by the user.

[15] The Myriad Set Pro font family was first embedded into Apple's corporate website.

Adobe Heiti is a simplified Chinese typeface that borrows its Latin glyphs from Myriad.