UFC 30: Battle on the Boardwalk was a mixed martial arts event held by the Ultimate Fighting Championship at the Trump Taj Mahal (now the Hard Rock Hotel & Casino Atlantic City) in Atlantic City, New Jersey on February 23, 2001.

[2] The card was headlined by two title fights, a Light Heavyweight Championship bout between current champion Tito Ortiz and Evan Tanner, and the inaugural UFC Bantamweight Championship bout between Jens Pulver and Caol Uno.

[2] After this event, Bantamweight was renamed "Lightweight" under the new Unified Rules of Mixed Martial Arts, defined by the New Jersey State Athletic Control Board.

The event featured the first UFC appearances of Phil Baroni, Sean Sherk and Elvis Sinosic.

[2][5] One notable change instituted by Zuffa was allowing the championship bout fighters to choose their own entry music in lieu of the standard fare UFC theme song, but that change was not implemented at UFC 30.