Rachel's Valentina is a retired American Thoroughbred racehorse, best known for being the second foal out of the 2009 Horse of the Year Rachel Alexandra. She is also known for winning the grade I Spinaway Stakes as a two-year-old.

Rachel Alexandra is a retired American Thoroughbred racehorse and the 2009 Horse of the Year. When she won the 2009 Preakness Stakes, the second leg of the Triple Crown, she became the first filly to win the race in 85 years. She also won races in six states, on eight different tracks, against fillies and Grade 1 colts and older horses, achieving a long string of consecutive wins including numerous Grade 1 stakes. Rachel Alexandra neared or broke multiple stakes records, track records and winning margin records throughout her career. On September 28, 2010, owner Jess Jackson announced Rachel Alexandra's retirement. She was bred to 2007–2008 Horse of the Year Curlin and delivered a colt on January 22, 2012.