How are Jerry Seinfeld and George Costanza related?
Jerry Seinfeld and George Costanza are not directly related, although both characters were created by the same person: Jerry Seinfeld. However, their surnames do share a common thread: They each have two "n"s in theirs (Seinfeld andCostanza). This suggests that they might be family members or friends of some sort—but this is simply speculation based on the characters themselves and nothing else can be proven definitively.