Mama June -- Rear-Ended ... Driver Flees

Mama June was rear-ended by a hit and run driver Monday ... and her brood is badly shaken.

June tells us, she and the girls were leaving a gas station close to their new home in Hampton, GA when a minivan rear-ended their Suburban. She called 911 but the other driver sped off before she could write down the plate number.

No one was hurt but it scared everyone, especially Pumpkin ... who was badly injured last year in a another family car wreck.

The damage was minimal, so good luck finding the hit and run driver. Nevertheless, June says she'll file a police report.