This list of dead heat horse races includes wins between two or more horses, where the winner could not be determined by a photo finish. Before the 20th century, dead heat horse races could be settled by a second deciding race, unless the owners agreed to divide the prize.
- April 24, 1801 –in the King's Plate at Newmarket, between Worthy and Sorcerer, Worthy won in a deciding heat. [1]
- May 15, 1828 –in the Epsom Derby, between Cadland and The Colonel; Cadland won in a deciding heat. [2]
- June 21, 1832 –in the Ascot Gold Cup, between Camarine and Rowton; Camarine won in a deciding heat. [3]
- September 18, 1850 –in the St. Leger Stakes, between Voltigeur and Russborough; Voltigeur won in a deciding heat. [4]
- April 28, 1868 –in the 2000 Guineas, between Formosa and Moslem. [5]
- September 3, 1879 –in the Grosser Preis von Baden between Kincsem and Prince Giles The First. Kincsem won in a deciding heat. [6]
- May 28, 1884 –in the Epsom Derby, between Harvester and St. Gatien. [7]
- June 13, 1900 –in the Coronation Stakes, between Sainte Nitouche and Winifreda. [8]
- July 3, 1900 –in the July Stakes, between Doricles and Veles. [9]
- September 27, 1910 –in the Dewhurst Plate at Newmarket Racecourse, between King William and Phryxus.
- July 5, 1926 –in the Carter Handicap at Aqueduct Racetrack, between Macaw and Nedana.
- April 18, 1927 –in the Great Eastern Steeplechase at Oakbank Racecourse between Unohoo and Mt. Cooper.
- May 4, 1939 –in the Churchill Downs Handicap at Churchill Downs, Between Arab's Arrow and Kings Blue. [10]
- June 10, 1944 –in the Carter Handicap at Aqueduct Racetrack, between Brownie, Bossuet, and Wait A Bit; the first triple dead heat in a stakes race. [11]
- April 1951 –in the Mildmay of Flete Challenge Cup at Cheltenham Festival, between Canford and Slender. [12]
- March 1953 –in the St James's Place Foxhunter Chase at Cheltenham Festival, between Dunboy II and Merry. [13]
- October 3, 1953 –at Freehold Raceway, between Patchover, Payne Hall, and Penny Maid; the first triple dead heat in harness racing for a win. [14]
- November 3, 1956 –in the Hotham Handicap at Flemington Racecourse, Melbourne, between Fighting Force, Ark Royal, and Pandie Sun. [15]
- July 3, 1957 –at Hollywood Park Racetrack, between Joe's Pleasure, Challenger Tom, and Leaful; the first triple dead-heat for a win at Hollywood Park. [16]
- November 27, 1957 –at Roosevelt Raceway in New York, between Flaxey Dream, Great Knight and Navy Song. [17]
- December 27, 1957 –at Westport Trotting Club, New Zealand, between Wimpy, Night Owl and Keff; the first trotting triple dead heat determined by a photo finish. [18]
- October 14, 1970 –at Windsor Raceway, Ontario, between Arnold Gem, Banjo Phil, and Bervaldo. [19]
- August 12, 1972 –in the Adios Stakes at The Meadows, between Jay Time and Strike Out. [20]
- April, 1977 –in the Aintree Hurdle, between Monksfield and Night Nurse. [21]
- July 6, 1980 –in the Grand Prix de Saint-Cloud, between Dunette and Shakapour. [22]
- May, 1984 –in the Lockinge Stakes, between Cormorant Wood and Wassl
- January 28, 1987 –in the Rod Carmichael Handicap at Stony Creek Racecourse, between Fast Seal, Mr Spectre and Chesterfield; a triple dead heat. [23]
- May 2, 1988 –at Hippodrome Trois Rivieres, between Jack Des Rivieres, Kingwood Tog and H F Elaine; the fifteenth triple dead heat for a win in harness racing history. [24]
- October 14, 1988 –in the Dewhurst Stakes, between Prince of Dance and Scenic. [5]
- August 5, 1989 –in the Hambletonian Stakes, between Park Avenue Joe and Probe. Park Avenue Joe was declared the winner for parimutuel and prize money purposes, based on the two heat and runoff format, based on average finish (second and first in the two heats; Probe was first and ninth). [25]
- 1995 –in the Hong Kong Champions & Chater Cup, between Makarpura Star and Survey King. [26]
- December 13, 1997 –in Race 4 at Hollywood Park Racetrack, between Tina Celesta, Chans Pearl and Cool Miss Ann; a triple dead heat. [27] [28]
- April 6, 1996 - Between Gilhuer and Impervious at Pambula in a two horse race. [29]
- May 12, 1996 –in the third race at Yakima Meadows, between Fly Like A Angel, Allihavonztheradio and Terri After Five; a triple dead heat. [30]
- August 21, 1997 –in the Nunthorpe Stakes at York Racecourse, between Ya Malak and Coastal Bluff, with Alex Greaves on Ya Malak becoming the first woman to win a Group One race in Great Britain. [31]
- September 27, 1998 –in the Kentucky Cup Classic, between Silver Charm and Wild Rush. [32]
- 2001 –in the Great Northern Steeplechase at Ellerslie Racecourse, between Smart Hunter and Sir Avon. [33]
- 2003 –in the Breeders' Cup Turf at Santa Anita Park, between High Chaparral and Johar. [34]
- March 2004 –in the Dubai Duty Free Stakes at Nad Al Sheba Racecourse, between Right Approach and Paolini. [35]
- September 2004 –in the Doncaster Cup, between Millenary and Kasthari
- March 2006 –in the Doncaster Mile Stakes, between Kandidate and Vanderlin
- September 30, 2007 –in the Fenwolf Stakes at Ascot, between Distinction and Solent
- September 24, 2008 –in the Foundation Stakes at Goodwood, between Hearthstead Maison and Tranquil Tiger
- March 2009 – at The Meadows, between Tsm Goldenridge, Serious Damage and Teen Elvis; the 25th triple dead heat in harness racing history. [36]
- May 23, 2010 –in the 71st Yushun Himba ("Japanese Oaks") at Tokyo Racecourse, between Apapane and Saint Emilion; the first Japanese Grade I race to result in a dead heat for the win. [37] [38]
- November 21, 2010 –in the Jockey Club Sprint at Sha Tin Racecourse, Hong Kong, between Singapore representative Rocket Man and Hong Kong representative One World. [39]
- April 17, 2011 –in the Maharaja Harisinghji Trophy at Mahalaxmi Racecourse, Mumbai, between Sprint Star and Misschievous Trot; the first dead heat in a graded race in the history of Indian horse racing.
- July 16, 2011 –in the American Oaks at Hollywood Park, between Cambina and Nereid. [40]
- September 10, 2011 –in the Irish St. Leger, between Duncan and Jukebox Jury. [41]
- August 18, 2012 - At Lingfield Park Racecourse in a two-horse race between Ayaar and Snowboarder. [42]
- August 25, 2012 –in the Travers Stakes, between Alpha and Golden Ticket. [43]
- March 9, 2013 - At Flemington Racecourse in the Blamey Stakes between Pussiance De Lune and Budriguez. [44]
- May 31, 2013 - At Belmont Park between Anaphylaxis and Copper Forrest. [45]
- May 31, 2013 - At Belmont Park between Leave of Absence and Smash. [46]
- August 31, 2013 –in the Atalanta Stakes, between Integral and Ladys First. [47]
- April 11, 2014 –at Evangeline Downs, between All In The Art, Chessie Slew, and Memories Of Trina; a triple dead heat. [48]
- May 31, 2014 –in the Grand Cup at York, between Clever Cookie and Ralston Road. [49]
- October 18, 2014 –in the Caulfield Sprint at Caulfield Racecourse, Melbourne, between Miracles of Life and Bel Sprinter. [50]
- December 19, 2015 –in the Ladbroke Handicap Hurdle at Ascot, between Jolly's Cracked It and Sternrubin. [51]
- September 3, 2016 –in the Spinaway Stakes at Saratoga Racecourse, between Sweet Loretta and Pretty City Dancer. [52]
- November 12, 2016 –in the High Sheriff of Gloucestershire's Mares' Standard Open NH Flat Race at Cheltenham Racecourse, between My Khaleesi and Irish Roe. [53] [54]
- September 22, 2018 –in the Ayr Gold Cup, between Baron Bolt and Son of Rest. [55]
- February 20, 2021 –in the Oakleigh Plate, between Celebrity Queen and Portland Sky. [56]
- February 23, 2021 - At Bendigo, between Cloudy and Seradess. [57]
- May 1, 2021 - in the Old Forester Bourbon Turf Classic Stakes at Churchill Downs, between Colonel Liam and Domestic Spending
- May 21, 2021 - At Santa Anita Park between Mountain Spirit and Press Briefing.
- August 30, 2021 - in the EBF Restricted Novice Stakes at Ripon Racecourse, between Maybe Even Never and Sunday Justice
- October 16, 2021 - At Eagle Farm Racecourse, between Vendidit and Ciccina. [58] However the jockey of Vendidit lodged a protest against Ciccina against for interference in the home straight. A counter protest was lodged by the jockey of Ciccina against Vendidit alleging interference near the 1200m. As the stewards could not be satisficed that the extent of the interference to both horses affected the race result both protests were dismissed and the dead heat stood. [59]
- November 20, 2021 - At Ballarat between Silent Sovereign and Just Benjamin. [60]
- November 27, 2021 - At Newcastle in the Grade 1 Fighting Fifth Hurdle between Epatante and Not So Sleepy. [61]
- April 2, 2022 - At Bendigo between Foxy Frida and Sirileo Miss. [62]
- July 2, 2022 - At Woodbine Racetrack in the Grade 2 Nassau Stakes, between Crystal Cliffs and Lady Speightspeare, ridden by Rafael Hernandez and Emma-Jayne Wilson respectively. Two thousandth career win for Roger Attfield, trainer of Lady Speightspeare. [63]
- August 13, 2022 - At Newmarket, between Canterbury Bell and Total Lockdown.
- October 1, 2022 - in the Epsom Handicap at Royal Randwick between Top Ranked and Ellsberg.
- October 22, 2022 - At Keeneland between Pure Pauline and her aunt and stablemate, Grand Entrance. [64]
- December 4, 2022 - At Woodbine Racetrack in the Grade 3 Valedictory Stakes, between Wentru and Who’s the Star, ridden by Rafael Hernandez and Emma-Jayne Wilson respectively. Second dead heat of the year between these two jockeys, with both occurring in graded stakes races. [65]
- August 17, 2023 - in the Sovereign Stakes at Salisbury between Mighty Ulysses and Embesto.
- January 6, 2024 - At Fair Grounds Race Course between Got Me a Chrysler and City of Love.
- May 19, 2024 - At Santa Anita Racetrack between Roman Empress and Bella Renella
