I can't be accused of turning this thread into a "Beatles thread", as someone else has already done so. And so, without any compunctions of guilt, I present: Pete Best and his mother
Not with his parents but here's Neil Young's dad, I think the eyebrows give him away Scott Young (writer) - Wikipedia
The late Cliff, great Cliff Burton of Metallica with his parents Jan and Ray Burton. Look at those smiles!
Wow… put Ma Iommi in a leather jacket and strap a left handed Gibson SG on her and I would be hard pressed to tell the difference! It’s uncanny how much some of these rock stars resemble one of their parents!
Butros and Tillie Khaury, with son Herbert. Tint Tim did a spoken bit on the record, saying he hoped more musicians would be inspired to put their parents on album covers.