I'd say my favorite cartoon would have to be Scooby-Doo. I can remember watching it constantly as a young kid and I'm currently rewatching it as something I can fall asleep with on in the background.

I can't possibly pin it down to just one but the favourites were and still are... CatDog, Angry Beavers, Hey Arnold!, Rocko's Modern Life, Rugrats, Aaahh!!! Real Monsters. 
 

Mine was most definitely Pokemon. I could not wait to get up in the morning and sit on the counter eating breakfast and watching the new episodes. I collected probably a couple hundred of the cards and have played all of the games (even the new ones)

For me, it’s gotta be He-Man or ThunderCats. The originals. The remakes are cheap, shitty rip-offs. Honourable mention goes to BraveStarr, The Lost Cities of Gold and latterly X-Men the cartoon.

Too many tbh, it was before the the "era" of the internet so there was a lot?

Spider Man

Batman

Popeye

Warner Bros toons

Disneys

But my all time favorite will be; Dragon Ball

Ahhhhh fav childhood cartoon cannot be other than anything by hanna barbera, i mean, i was born in 94, but they were still pretty popular at the time. But i do reckon other more modern shows, like samurai jack and megas xlr LOL

One of my favorite cartoon was Daffy Duck, another was bugs bunny. Too controversial by todays bs standards, lol.

Bugs bunny without a doubt one of the coolest characters it made me want to eat carrots!

Well if I had to pick one cartoon from my childhood that would crack me up every time I watched it that would be Nu pogodi.

It was a Soviet series of animated short films that followed the comical adventures of a wolf trying to catch a hare.

Very little speech was used in it and it was mostly grunts and songs from that era. Funny as hell.

I used to watch a lot of cartoons but i think if i had to choose a definite favorite it would be Ren and Stimpy something about the surreal art and three stooges level antics struck a chord with me growing up 

One of my favorite childhood cartoons was Alvin and the Chipmonks...I watched it every morning before school and on the weekends.

There's too many to mention, and I would surely be dating myself with the answers, but a few that I enjoyed were Hong Kong Phooey, Superfriends, Scooby Doo, and Land of the Lost (if that counts as a cartoon - it was on Saturday mornings). Those Sleestaks were fucking freaky as shit.

My favorite childhood cartoon has to be Courage the Cowardly Dog. Now admittedly, that show likely did more harm than good, because even speaking from an adult standpoint, some of those episodes were just wack. But I do remember being able to watch that show for hours in a trance.