Adrian Diaconu (born 9 June 1978) is a Romanian former professional boxer who competed from 2001 to 2011, and held the WBC light-heavyweight title from 2008 to 2009. As an amateur boxing he won a silver medal in the middleweight division at the 1999 World Championships and bronze in the light-middleweight division at the 1997 World Championships. Diaconu was born in Ploieşti, Romania, but fought out of Montreal, Quebec, Canada for almost his entire professional career.
Olympic results:
In October 2007, world cruiserweight champion David Haye described Diaconu as "the future of the light-heavyweight division."
On 19 April 2008, Diaconu won the vacant WBC interim title with a twelve-round unanimous decision over Chris Henry in Romania; the interim title being at stake to allow full titleholder Chad Dawson to make an optional defense after a previous injury-produced delay to the mandated bout. In July 2008, Diaconu was elevated to full champion status after Dawson vacated the title to avoid having to make the mandatory defense. ESPN – Dawson vacates 175-pound title to gird for possible showdown with Tarver – Boxing
Diaconu suffered his first career defeat and lost the WBC world title to Jean Pascal on 19 June 2009, and would go on to lose a rematch on 11 December 2009. Diaconu's final professional fight took place on 21 May 2011 against former champion Chad Dawson, who defeated Diaconu by a unanimous decision after twelve rounds. A year later, Diaconu announced his retirement from boxing, stating that he felt a lack of support from his promoters, Interbox, to organize significant fights for him.
| 30 | Loss | 27–3 | Chad Dawson | UD | 12 | 21 May 2011 | ||
| 29 | Win | 27–2 | Omar Sheika | UD | 10 | 15 Oct 2010 | ||
| 28 | Loss | 26–2 | Jean Pascal | UD | 12 | 11 Dec 2009 | ||
| 27 | Loss | 26–1 | Jean Pascal | UD | 12 | 19 May 2009 | ||
| 26 | Win | 26–0 | David Whittom | UD | 8 | 4 Apr 2009 | ||
| 25 | Win | 25–0 | Chris Henry | UD | 12 | 19 Apr 2008 | ||
| 24 | Win | 24–0 | Rico Hoye | TKO | 3 (12), | 9 May 2007 | ||
| 23 | Win | 23–0 | Orlando Rivera | UD | 10 | 15 Sep 2006 | ||
| 22 | Win | 22–0 | Andre Thysse | UD | 12 | 16 May 2006 | ||
| 21 | Win | 21–0 | Max Heyman | KO | 4 (12), | 24 Mar 2006 | ||
| 20 | Win | 20–0 | Darrin Humphrey | TKO | 11 (12), | 2 Dec 2005 | ||
| 19 | Win | 19–0 | Conal MacPhee | TKO | 2 (10), | 16 Sep 2005 | ||
| 18 | Win | 18–0 | Conal MacPhee | TKO | 5 (10), | 3 May 2005 | ||
| 17 | Win | 17–0 | James Crawford | TKO | 1 (8) | 12 Apr 2005 | ||
| 16 | Win | 16–0 | Jesse Sanders | TKO | 4 (6), | 18 Mar 2005 | ||
| 15 | Win | 15–0 | Roberto Coelho | UD | 10 | 20 Mar 2004 | ||
| 14 | Win | 14–0 | Rico Cason | TKO | 3 (8), | 20 Dec 2003 | ||
| 13 | Win | 13–0 | Tiwon Taylor | KO | 2 (8), | 22 Nov 2003 | ||
| 12 | Win | 12–0 | Ronald Cobbs | TKO | 3 (6) | 17 May 2003 | ||
| 11 | Win | 11–0 | Isidore Janvier | UD | 8 | 5 Apr 2003 | ||
| 10 | Win | 10–0 | Ron Johnson | KO | 1 (8), | 28 Feb 2003 | ||
| 9 | Win | 9–0 | Shaun Creegan | UD | 8 | 14 Dec 2002 | ||
| 8 | Win | 8–0 | Kenny Bowman | 6 | 6 Sep 2002 | |||
| 7 | Win | 7–0 | Ganny Dovidovas | KO | 3 (8) | 31 May 2002 | ||
| 6 | Win | 6–0 | Melroy Corbin | UD | 6 | 26 Apr 2002 | ||
| 5 | Win | 5–0 | Francis Doiron | KO | 1 (6), | 30 Nov 2001 | ||
| 4 | Win | 4–0 | Claudio Ortiz | UD | 4 | 20 Jul 2001 | ||
| 3 | Win | 3–0 | Eric Olds | 4 | 10 Jul 2001 | |||
| 2 | Win | 2–0 | Todd Black | 1 (4), | 5 Jun 2001 | |||
| 1 | Win | 1–0 | Mark Newton | 1 (4), | 2 Mar 2001 |
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