Josh Lucas Divorce -- Wife Wants LOTS Of Money

Lucas is on the receiving end of endless demands by his estranged wife, who has filed for divorce ... and most of them involve cold hard cash.

Josh's wife, Jessica Ciencin Henriquez, just filed legal docs asking for spousal support, child support, medical and dental coverage, lawyer's fees and life insurance.

For some reason Jessica -- a freelance writer -- wants to enforce their prenup ... so maybe she gets a good deal under the agreement.

Jessica is a little more generous when it comes to their 20-month-old son Noah -- she's asking for joint custody.