Dennis Rodman has been named a "person of interest" in a hit-and-run investigation in Santa Ana, CA -- after a late night collision Wednesday morning ... TMZ Sports has learned.
It's all based around an accident on the I-5 Freeway just after midnight. The California Highway Patrol responded a smashed BMW ... Dennis was NOT at the scene.
But someone at the scene told CHP that there was another car involved -- and Dennis was in it.
Cops are investigating -- and we're told at least one witness says Dennis was spotted at a bar, singing karaoke before the crash.