Caitlyn Jenner -- I Didn't Spell My Name with a 'K' for Good Reason

Caitlyn Jenner did not spell her first name with a "K" because she wants a clean break from the Kardashian moniker ... TMZ has learned.

Sources closely associated with Bruce tell us Caitlyn wants to make it clear to her family and the world ... she is her own person. That sounds obvious, but we're told it was an extremely meaningful choice for her ... she has never been her own person before, and becoming part of the Kardashian brood would undermine her goal.