I'm assuming by kid you mean younger than teen. There are tones of Archie type comics with teens -- though fewer here than in general. There are also many funny animal comics with adult and child funny animals like Donald and his nephews -- again those aren't here but similar ones are. I'll stick to human younger than teens here:
Eva the Imp (Ajax)
Kilroys (ACG) has some stories centering on kids
Little Angel (Better)
Spunky (Better)
Li'l Genius, Li'l Tomboy, Li'l Rascal Twins (Charlton)
Rock N Rollo (Charlton)
Little Max (Harvey)
Daredevil (Lev Gleason) -- the later issues all featured the Little Wiseguys
Brain, Clubhouse Rascals, Little Miss Sunbeam, Tick Tock Tales (ME)
Calling All Kids (Parents)
Little Eva (St John)
Howdy Doody (Dell) is a kid. He was a marionette in "real life" but just a kid in the comics.
Those are the ones I can think of off the top of my head.