| Horsename: | Glaucus |
| Sire: | Partisan |
| Grandsire: | Walton |
| Dam: | Nanine |
| Damsire: | Selim |
| Sex: | Stallion |
| Foaled: | 1830 |
| Country: | Great Britain |
| Colour: | Bay |
| Record: | 19:11-4-0 |
| Updated: | 26 March 2024 |
Glaucus (1830 – 1847?) was a thoroughbred racehorse and sire in Great Britain and Germany.
Glaucus was a bay horse. His sire was Partisan, of which through his lineage continued the Walton branch of the Sir Peter Teazle direct sire line. His dam was Nanine.
Glaucus ran for five seasons, from 1832 to 1836. His major wins include the Gold Cup at Ascot, and the Goodwood Cup.
Glaucus produced two classic winners, both fillies (Pic-Nic and Refraction), both born in 1842. His son, The Nob, was a moderately successful racehorse. The Nob sired The Nabob, who was a successful sire of racehorses in France. Glaucus was sent to Germany to continue stud duty, but was not as successful.
* Glaucus is inbred 3S x 4D to the stallion Sir Peter Teazle, meaning that he appears third generation on the sire side of his pedigree and fourth generation on the dam side of his pedigree.
^ Glaucus is inbred 4S x 4S x 5D x 5D x 5D to the stallion Highflyer, meaning that he appears fourth generation twice on the sire side of his pedigree and fifth generation thrice (via Sir Peter Teazle, Highflyer mare, and Skyscraper Sister to Highflyer) on the dam side of his pedigree.