Jeremy Shockey is playing dumb with his finances according to his soon-to-be ex wife ... and now she wants the unemployed NFLer tossed in jail.
TMZ broke the story ... Daniela Cortazar-Shockey -- who was only married to Jeremy for 8 months before he filed for divorce -- has been fighting the NFLer for alimony, despite Jeremy claiming to have an iron clad prenup.
Now Daniela says Jeremy isn't playing by the rules -- claiming in legal docs that he's purposely pretending to know nothing about his finances (or even who pays his bills) and refuses to hand over info to prove his net worth.
She's asking a judge to punish Jeremy for his behavior by slapping him with fines or locking him up.
Daniela claims Jeremy's worth north of $15 million -- and he's only dummying up to "strong arm" her into dropping the case.