| Horsename: | Conniver |
| Sire: | Discovery |
| Grandsire: | Display |
| Dam: | The Schemer |
| Damsire: | Challenger |
| Sex: | Filly |
| Foaled: | 1944 |
| Country: | United States |
| Colour: | Brown |
| Breeder: | Alfred G. Vanderbilt II |
| Owner: | Harry La Montagne |
| Trainer: | William Post |
| Record: | 56: 15-3-6 |
| Earnings: | $227,825 |
| Race: | Beldame Handicap (1948) Brooklyn Handicap (1948) Comely Handicap (1948) Vagrancy Handicap (1948) |
| Awards: | American Champion Older Female Horse (1948) |
| Updated: | August 27, 2008 |
Conniver (1944–1970) was an American Thoroughbred racehorse who was voted the 1948 American Champion Older Female Horse. Bred by Alfred G. Vanderbilt II, she was purchase as a yearling by New York City businessman and sculptor, Harry La Montagne.
When her racing days were over, Conniver was used as a broodmare. Of her six foals, Clandestine and Plotter won important American Graded stakes races.