Chris Brown -- I Settled 2 Assault Cases for Chump Change

Chris Brown is a little lighter today ... he just lost more than a $100K, but in return got rid of 2 pesky lawsuits.

Sources connected to Chris tell TMZ ... the guy who Chris punched in Washington D.C. a year ago just settled his civil lawsuit against Chris. We're told the singer anted up around $100,000.

You'll recall ... Chris dodged a major bullet with the help of his lawyer Mark Geragos by striking a plea deal in the criminal case. He avoided probation, jail and fines by pleading guilty to simple assault.

As for the second case ... TMZ broke the story that Chris got into an insane fight at a West Hollywood recording studio in January with Frank Ocean's posse. Frank's cousin sued Chris for $3 million. We've learned the case just settled for UNDER $20K.

It's handled.