Lettermark
A logo built from letters only: the initials or abbreviation of the name styled into a mark, the way IBM, HBO, and CNN work.
See it
What it is
A lettermark compresses the name down to its initials or an abbreviation, then designs those letters until they read as a symbol. IBM, HBO, and CNN are acronym lettermarks, and so are longer ones like NASA and IKEA: there is no hard ceiling on letter count, though the mark gets harder to hold as a shape past four. The interlocking Chanel C's and the Louis Vuitton LV are monograms, the decorative branch of the same idea. Paul Rand's striped IBM is the textbook case of initials treated as graphic form rather than as text.
Reach for one when the full name is long, boring, or a mouthful, and when you need something square that survives an avatar crop, an app icon, and an embroidered polo. Lettermarks are the cheapest way to get an icon-shaped asset out of a name that has no picture in it.
Gotcha: initials are the most crowded space in trademark law, and two letters in a circle is what everyone else also drew. Run a search early. Second trap is legibility: overlapping or interlocking letters that look sophisticated at poster size collapse into a single blob at 16px, so test small before you fall in love.
Ask AI for it
Design a lettermark logo from the initials '[XY]' for a brand called '[NAME]'. Build the mark from the letters alone, no pictorial icon and no full name. Use a heavy geometric sans, align the letters on a shared baseline with tight optical spacing, and find one structural move that ties them together (a shared stem, a cut counter, a single continuous stroke). Flat black on white, vector, square-friendly proportions that survive a circular avatar crop. Render it at 512px and at 24px side by side.