| Class: | Group 2 |
| Horse Race: | Prix Guillaume d'Ornano |
| Location: | Deauville Racecourse Deauville, France |
| Inaugurated: | 1952 |
| Race Type: | Flat / Thoroughbred |
| Sponsor: | Haras du Logis Saint-Germain |
| Website: | france-galop.com |
| Distance: | 2,000 metres (1¼ miles)[1] |
| Surface: | Turf |
| Track: | Right-handed |
| Qualification: | Three-year-olds |
| Weight: | 58 kg Allowances 1½ kg for fillies |
| Purse: | €400,000 (2022) 1st: €228,000 |
|}The Prix Guillaume d'Ornano is a Group 2 flat horse race in France open to three-year-old thoroughbreds. It is run at Deauville over a distance of 2,000 metres (about 1¼ miles), and it is scheduled to take place each year in August.
The event was established in 1952, and it was originally called the Prix de la Côte Normande. The inaugural running was contested over 3,000 metres, and the race was shortened to 2,000 metres in its second year. It was extended to 2,400 metres in 1958, and restored to 2,000 metres in 1960.
The present system of race grading was introduced in 1971, and for a period the Prix de la Côte Normande was classed at Group 3 level. It was promoted to Group 2 status in 1983.
The race was renamed the Prix Guillaume d'Ornano in 1987. It was named in memory of Guillaume d'Ornano, a former owner of Haras de Manneville, a stud farm near Deauville.
Leading jockey (5 wins):
----Leading trainer (11 wins):
----Leading owner (6 wins):
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| Year | Winner | Jockey | Trainer | Owner | Time | |
|---|---|---|---|---|---|---|
| 1979 | Northern Baby | Philippe Paquet | François Boutin | Anne-Marie d'Estainville | 2:02.0 | |
| 1980 | Glenorum | Alain Badel | David Smaga | Helen G. Stollery | ||
| 1981 | Al Nasr | Yves Saint-Martin | André Fabre | Moufid F. Dabaghi | ||
| 1982 | General Holme | Alain Lequeux | Olivier Douieb | Dan Lasater | ||
| 1983 | Mourjane | Alfred Gibert | André Fabre | Moufid F. Dabaghi | 2:06.7 | |
| 1984 | Raft | Pat Eddery | Guy Harwood | Khalid Abdullah | 2:04.5 | |
| 1985 | New Bruce | Philippe Bruneau | Gérard Collet | Ecurie du Ring | 2:14.4 | |
| 1986 | Double Bed | Gérald Mossé | François Doumen | Ronald Reeves | 2:08.7 | |
| 1987 | Broken Hearted | Richard Quinn | Paul Cole | Prince Fahd bin Salman | 2:08.1 | |
| 1988 | Valanjou | Robert Laplanche | Louis Boulard | Jacques Bedel | 2:06.1 | |
| 1989 | Creator | Cash Asmussen | André Fabre | Sheikh Mohammed | 2:14.2 | |
| 1990 | Antisaar | Cash Asmussen | André Fabre | Sheikh Mohammed | 2:13.6 | |
| 1991 | Glity | Éric Legrix | Jean-Marie Béguigné | Xavier Beau | 2:06.9 | |
| 1992 | Great Palm | Alan Munro | Paul Cole | Prince Fahd bin Salman | 2:12.7 | |
| 1993 | Dernier Empereur | Sylvain Guillot | André Fabre | Paul de Moussac | 2:07.0 | |
| 1994 (dh) | Just Happy Lassigny | Walter Swinburn Thierry Jarnet | Michael Stoute André Fabre | Maktoum Al Maktoum Sultan Al Kabeer | 2:09.2 | |
| 1995 | Montjoy | Richard Quinn | Paul Cole | Sir George Meyrick | 2:11.1 | |
| 1996 | Sasuru | Michael Hills | Geoff Wragg | Lady Oppenheimer | 2:16.1 | |
| 1997 | Rajpoute | Gérald Mossé | François Doumen | John D. Martin | 2:05.5 | |
| 1998 | Kabool | Frankie Dettori | Nicolas Clément | Maktoum Al Maktoum | 2:07.0 | |
| 1999 | Val Royal | Olivier Peslier | André Fabre | Jean-Luc Lagardère | 2:12.7 | |
| 2000 | Best of the Bests | Frankie Dettori | Saeed bin Suroor | Godolphin | 2:06.7 | |
| 2001 | Masterful | Frankie Dettori | John Gosden | Sheikh Mohammed | 2:07.9 | |
| 2002 | Highdown | Martin Dwyer | Marcus Tregoning | Mrs W. W. Fleming | 2:10.4 | |
| 2003 | Kalabar | Thierry Thulliez | Pascal Bary | Khalid Abdullah | 2:10.8 | |
| 2004 | Mister Monet | Joe Fanning | Mark Johnston | Syndicate 2002 | 2:14.4 | |
| 2005 | Pinson | Stéphane Pasquier | Jean-Claude Rouget | Guy de Rothschild | 2:10.5 | |
| 2006 | Multidimensional | Christophe Lemaire | Henry Cecil | Niarchos Family | 2:14.3 | |
| 2007 | Literato | Christophe Lemaire | Jean-Claude Rouget | Hervé Morin | 2:03.9 | |
| 2008 | Russian Cross | Johan Victoire | André Fabre | Edouard E. de Rothschild | 2:08.5 | |
| 2009 | Sri Putra | Frankie Dettori | Michael Jarvis | Sultan Ahmad Shah | 2:06.1 | |
| 2010 | Scalo | Maxime Guyon | Andreas Wöhler | Gestüt Ittlingen | 2:13.0 | |
| 2011 | Galikova | Olivier Peslier | Freddy Head | Wertheimer et Frère | 2:07.6 | |
| 2012 | Saint Baudolino | Maxime Guyon | André Fabre | Godolphin | 2:07.7 | |
| 2013 | Vancouverite | Pierre-Charles Boudot | André Fabre | Godolphin | 2:04.22 | |
| 2014 | Gailo Chop | Julien Augé | Antoine de Watrigant | Oti / Chopard | 2:11.64 | |
| 2015 | New Bay | Vincent Cheminaud | André Fabre | Khalid Abdullah | 2:08.34 | |
| 2016 | Almanzor | Jean-Beanard Eyquem | Jean-Claude Rouget | Caro / Augustin-Normand | 2:09.63 | |
| 2017 | Eminent | Ryan Moore | Martyn Meade | Sir Peter Vela | 2:02.26 | |
| 2018 | Knight To Behold | Oisin Murphy | Harry Dunlop | L. Neil Jones | 2:06.10 | |
| 2019 | Headman | Jason Watson | Roger Charlton | Khalid Abdullah | 2:13.10 | |
| 2020 | Mishriff | Frankie Dettori | John Gosden | Prince A. A. Faisal | 2:16.32 | |
| 2021 | Dubai Honour | Maxime Guyon | William Haggas | Mohamed Obaida | 2:04.83 | |
| 2022 | Al Hakeem | Cristian Demuro | Jean-Claude Rouget | Al Shaqab Racing | 2:07.58 | |
| 2023 | Ace Impact | Cristian Demuro | Jean-Claude Rouget | Gousserie Racing & Ecuries Serge Stempniak | 2:07.59 | |
| 2024 | Economics | Tom Marquand | William Haggas | Isa Salman Al Khalifa | 2:04.30 |
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