Simple Complex is a jazz album of original compositions by pianist Jon Weber.

The album, which was released in 2004 by the 2nd Century Jazz Label, features Weber on piano, drummer Mark Walker, Eric Alexander on sax, trumpeters Diego Urcola and Roy Hargrove, bassists Avishai Cohen, the late Niels-Henning Ørsted Pedersen, Peter Washington and Gary Burton on vibraphone.

Critic Howard Reich praised "the originality of [Weber's] compositions, the ingenuity of his arrangements and the high sheen of the ensemble performances," and wrote: "even Weber's more ardent fans never could have guessed that the man can write and arrange at such an exalted level.

"[3] In a review for AllMusic, Scott Yanow commented: "The music ranges from 1960s hard bop to some more explorative playing that utilizes tricky rhythms and complex chord changes... Weber is generous in allocating solo space...

"[4] AAJ's Elliott Simon remarked: "Weber has mixed and matched some of the world's best musicians to present and interpret his work... this is broad, quick-paced music that uplifts with a bursting rhythmic intensity.