Horse Name Generator

If you are naming a racehorse, you are not naming it alone. In the United States The Jockey Club maintains the American Stud Book and must approve every name, and the constraints are tighter than most people expect. A name may be no longer than eighteen characters including spaces and punctuation, which is why so many racehorse names run words together into a single block.

The process itself is competitive. Owners submit six names in order of preference and the Jockey Club decides which, if any, is allowed. The registrar has indicated that roughly thirty percent of submitted names are rejected, most often because a name is too close to an existing one in spelling or pronunciation. A Thoroughbred must be named by February of its two-year-old year or a late fee applies.

The prohibitions are specific. A name cannot consist entirely of initials, nor entirely of numbers — though numbers above thirty are permitted if spelled out — and it cannot end in a numerical designation such as second or third. It cannot end in a horse-related term like filly, colt, mare, stallion, or stud. Names of living people require that person's written permission on file, and names with obvious commercial or artistic significance are refused.

Uniqueness is the big one. A name cannot duplicate or closely resemble one currently in use, and the names of major winners are permanently protected, much like retired sports numbers. The Jockey Club releases tens of thousands of older names back into circulation each year, which is the only reason the pool has not run dry.

Almost every registered horse has a second, informal name used day to day. Secretariat was known around the barn as Big Red. The registered name is for the papers and the racecard; the barn name is short, affectionate, and usually shouted, which means it needs to survive being called across a field.

When choosing a formal name, it is worth thinking about what it will shorten to, because someone will shorten it. A two-word registered name where either word works alone gives you a barn name for free.

One of the reasons racehorse names get strange is that many are constructed to reference the horse's parents. Owners commonly build a name that nods to the sire and dam at once, which produces puns, portmanteaus, and oblique references that only make sense if you know the pedigree. This is a genuine tradition rather than a quirk, and it is part of why the names reward a second look.

For a non-racing horse none of these constraints apply, and you can name a horse whatever you like. But the eighteen-character discipline is a surprisingly good creative constraint even then — it forces names that are punchy rather than sentimental.