Meaning & Origin
PJ is a boy's baby name of American origin, initials most commonly standing for Peter James, Paul James, Patrick Joseph, or other double-initial combinations. Like BJ and LJ, PJ belongs to the American tradition of initial names that carry the full weight of two names in the most compact possible form, particularly strong in the Southern United States and in African-American naming traditions.
PJ carries the American initial tradition with the warm informality of a name that sounds like it belongs to someone you already know well — the kind of name that skips past formality entirely and lands in immediate, easy familiarity. A name of declared, comfortable closeness.