The UCW World Heavyweight Championship was the flagship title in the now defunct Ultimate Championship Wrestling.
|Wrestler||Date Won||Date Lost|
|Maynard||June 23rd, 2005||August 15th, 2005|
|"The Icon" Joey Johnson||August 15th, 2005||September 20th, 2006|
|Doctor Ian||September 20th, 2006||November 3rd, 2006|
|Greg Venom||November 3rd, 2006||November 15th, 2006|
|"The Saint" Patrick McCarthy||January 16th, 2008||February 27th, 2008|
|Greg Venom||February 27th, 2008||March 30th, 2008|
|Doctor Ian||March 30th, 2008||August 27th, 2008|
|Samuel Hessingstock||August 27th, 2008||September 1st, 2008|
|Anthoni Young||November 20th, 2008||December 4th, 2008|
This is the list for longest reigns in terms of days and includes one or more reigns.
|Doctor Ian||196 Days|
|"The Icon" Joey Johnson||143 Days|
|Greg Venom||43 Days|
|"The Saint" Patrick McCarthy||42 Days|
|Anthoni Young||14 Days|
|Samuel Hessingstock||4 Days|
- Between the first spell and second spell of UCW opening and closing, Joey Johnson remained Champion. The above days only count days as the company was open.