Squiddly Diddly is an anthropomorphic animated squid created by Hanna-Barbera, who was featured in his own cartoon segment on The Atom Ant/Secret Squirrel Show beginning in 1965.

The round-headed, sailor-hatted Squiddly, more octopus than squid in appearance, lived in an aquatic park similar to SeaWorld known as Bubbleland. Diddly is an aspiring musician and makes many attempts to escape and attain musical stardom. He is constantly foiled by Bubbleland’s administrator Chief Winchley.

Some observers have commented that the name Squiddly Diddly was derived from the name of musician Bo Diddley.