UFC on Fox: Diaz vs. Miller (also known as UFC on Fox 3) is an upcoming mixed martial arts event to be held by the Ultimate Fighting Championship on May 5, 2012 at the IZOD Center in East Rutherford, New Jersey
Preliminary card (Facebook)
- Middleweight bout: Mike Massenzio vs. Karlos Vemola
- Bantamweight bout: Roland Delorme vs. Nick Denis
Preliminary card (Fuel TV)
- Featherweight bout: Dennis Bermudez vs. Pablo Garza
- Lightweight bout: Danny Castillo vs. John Cholish
- Catchweight (127lb) bout: Louis Gaudinot vs. John Lineker
- Welterweight bout: John Hathaway vs. Pascal Krauss
- Flyweight bout: John Dodson vs. Tim Elliott
- Lightweight bout: Tony Ferguson vs. Michael Johnson
Main card
- Heavyweight bout: Pat Barry vs. Lavar Johnson
- Middleweight bout: Rousimar Palhares vs. Alan Belcher
- Welterweight bout: Josh Koscheck vs. Johny Hendricks
- Lightweight bout: Nate Diaz vs. Jim Miller
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