Boosie: Hey Capital One ... Here's What's Not In My Wallet ... $351k!!!

Boosie claims his bank account has been drained by people who hacked into his account ... and he's now poorer to the tune of $351,000.

Boosie says 2 years ago his driver's license was stolen, and someone used the information to gain access to his Capital One account and siphoned off chunks of cash ... $80k in one instance, $50k in another, and so on, according to docs obtained by TMZ. There were a number of transactions with 8 different names.

The rapper doesn't say why it took him 2 years to file a claim with Capital One, but better late than never, right? So he's asking the bank to reverse all the charges.