Vieux Manoir (1947–1981) was a French Thoroughbred racehorse and Champion sire.

Bred by Baron Edouard A. de Rothschild and raced by his son Guy following his death in 1949. Members of the prominent Rothschild banking family of France, they owned Haras de Meautry breeding farm in Touques, Calvados where Vieux Manoir was foaled. Vieux Manoir was trained by Frenchman, Geoffroy Watson, a member of the renowned English Racing Colony in Chantilly.

Vieux Manoir most notably won the 1950 French Classic, the Grand Prix de Paris, and was second in the British Classic, the St. Leger Stakes.

Retired to stud, Vieux Manoir was the leading sire in France in 1958. His best-known progeny was Val de Loir, whose wins included the Classic Prix du Jockey Club in 1962 and who became a three-time leading sire in France as well as a Leading broodmare sire in Great Britain & Ireland. Another son, Le Haar, sired Exbury and Niksar and was the leading sire in France in 1963. Through Vieux Manoir's daughter, Agujita, he is the damsire of the international superstar filly and U.S. Racing Hall of Fame inductee, All Along. And, through another daughter, Astuce, he is the damsire of the 1976 Prix de l'Arc de Triomphe winner, Ivanjica.

Vieux Manoir died at age thirty-four in 1981.

• Vieux Manoir profile at Gatewood Farms