Shoshana Roberts, the woman catcalled 100-plus times in an anti-street harassment vid that went viral, is now suing the director of that video.

In case you missed it ... Roberts was secretly recorded walking around NYC while men threw endless whistles and pickup lines at her. The clip got more than 40 million views.

Roberts filed docs against director Rob Bliss and Hollaback! -- the anti-street harassment group -- for using her likeness to promote their agenda. Her attorney says Shoshana did not have a written agreement with Bliss. He wouldn't say if she was paid for the gig, but believes she didn't get everything she was promised. He refused to be more specific.

Roberts is suing for at least $500k.