Zoe Saldana 911 Call -- Car Crash Rescue Mission

TMZ has obtained the 911 call placed by "Avatar" star Zoe Saldana, moments after the actress witnessed a nasty car crash in L.A. yesterday -- that left one elderly woman with a bloody gash on her face.

There are several female voices on the tape -- it's unclear which one is Zoe's.

As we previously reported, Saldana rushed to the scene -- helping the bloodied older woman out of her car and onto the sidewalk, where she called 911.