Unsurprisingly, the title that has been defended the most times is the WWE Championship. The crown jewel of the WWE has been defended a total of 29 times.
The title has been defended twice at two separate WrestleMania's.
Yokozuna defended the title twice at WrestleMania IX, against Bret Hart and Hulk Hogan.
The following year at WrestleMania X, Yokozuna defended his title twice; first against Lex Luger and later to Hart again.
At WrestleMania IV, a tournament was held to declare a new WWE champion. This was the first (and only) event in which nearly the entire PPV was dedicated to the event.
Randy Savage won the title after defeating Ted DiBiase in the finals.
The last wrestler to have defended the WWE Championship at WrestleMania was CM Punk, who defeated Chris Jericho at WrestleMania XXVIII to retain the title.
The next wrestler set to defend the WWE Championship is The Rock, at WrestleMania XXIX
1) Hulk Hogan vs. King Kong Bundy (WrestleMania 2)
2) Andre The Giant vs. Hulk Hogan (WrestleMania 3)
3) Randy Savage vs. Ted DiBiase (WrestleMania 4)
4) Hulk Hogan vs. Randy Savage (WrestleMania 5)
5) Hulk Hogan vs. Ultimate Warrior (WrestleMania 6)
6) Hulk Hogan vs. Sgt. Slaughter (WrestleMania 7)
7) Randy Savage vs. Ric Flair (WrestleMania 8)
8) Bret Hart vs. Yokozuna (WrestleMania 9)
9) Hulk Hogan vs. Yokozuna (WrestleMania 9)
10) Lex Luger vs. Yokozuna (WrestleMania 10)
11) Bret Hart vs. Yokozuna (WrestleMania 10)
12) Diesel vs. Shawn Michaels (WrestleMania 11)
13) Bret Hart vs. Shawn Michaels (WrestleMania 12)
14) Sycho Sid vs. Undertaker (WrestleMania 13)
15) Shawn Michaels vs. Steve Austin (WrestleMania 14)
16) The Rock vs. Steve Austin (WrestleMania 15)
17) Big Show vs. Mick Foley vs. The Rock vs. Triple H (WrestleMania 16)
18) The Rock vs. Steve Austin (WrestleMania 17)
19) Chris Jericho vs. Triple H (WrestleMania 18)
20) Brock Lesnar vs. Kurt Angle (WrestleMania 19)
21) Eddie Guerrero vs. Kurt Angle (WrestleMania 20)
22) JBL vs. John Cena (WrestleMania 21)
23) John Cena vs. Triple H (WrestleMania 22)
24) John Cena vs. Shawn Michaels (WrestleMania 23)
25) John Cena vs. Randy Orton vs. Triple H (WrestleMania 24)
26) Randy Orton vs. Triple H (WrestleMania 25)
27) Batista vs. John Cena (WrestleMania 26)
28) John Cena vs. The Miz (WrestleMania 27)
29) Chris Jericho vs. CM Punk (WrestleMania 28)