'''Obed Benjamin Sullivan''', born January 17, 1968 in Gulfport, MS, was a heavyweight boxer.  Nicknamed "The Fighting Marine", Sullivan was at times a highly-ranked heavyweight who fought many significant fighters of his era.  

Sullivan turned pro in 1992 and accumulated a 28-1-1 record with an International Boxing Federation intercontinental belt and wins over the likes of Garing Lane, Levi Billups, James Gaines, and Marion Wilson, setting up a bout with fellow rising prospect Hasim Rahman in 1997 on HBO.  Sullivan held his own and lost a majority decision, but built up credibility as a worthy heavyweight.  

After the loss to Rahman, Sullivan began 1998 by knocking out 33-1 Keith McKnight, but then would be stopped in the ninth round after a tough battle with towering undefeated contender Michael Grant. He was then matched against the veteran fringe contender Jesse Ferguson. Sullivan was outboxed and outpointed easily by the crafty 40 year old.

Things went downhill in 1999, losing a split decision to Derrick Jefferson, and travelling to Germany for a WBO heavyweight title challenge to Vitali Klitschko, where Sullivan quit on his stool after nine rounds.

{{Bokser infobox
|imie_nazwisko=Obed Sullivan
|zdjecie=
|pseudonim=The Fighting Marine
|kategoria_wagowa=ciężka
|kraj= Stany Zjednoczone
|data_urodzenia=17 stycznia 1968
|miejsce_urodzenia=Gulfport
|data_smierci|=
|miejsce_smierci|=
|styl=praworęczny
|liczba_walk=54
|zwyciestwa=41
|nokauty=30
|porazki=9
|remisy=2
|no_contests=2
|}}

'''Obed Benjamin Sullivan''' (ur. Gulfport) - amerykański bokser zawodowy wagi ciężkiej.

Rozpoczął swoją zawodową karierę w Hasimem Rahmanem w 1997, którą przegrał na punkty decyzją większości<ref>[http://www.boxingtimes.com/analyses/1997/971101rahman_sullivan.html Luis Escobar, ''Rahman Outpoints Sullivan'', The Boxing Times] </ref>.

Rok Michaelem Grantem<ref>[http://www.boxingtimes.com/analyses/1998/980530grant_sullivan.html Luis Escobar, ''Grant Hammers Out Sullivan'', The Boxing Times] </ref> i z ponad 40-letnim Jesse Fergusonem.

W Derrickiem Jeffersonem, jednak po kolejnych czterech wygranych dostał szansę walki o mistrzostwo świata organizacji WBO z Witalijem Kliczko. Sullivan przegrał, po tym jak nie wyszedł do walki po przerwie między dziewiątą i dziesiątą rundą<ref>[http://www.boxingtimes.com/analyses/1999/991211klitschko_sullivan.html Spencer Cobb Adams, ''WBO King Klitschko Halts Sullivan'', The Boxing Times] </ref>.