SO HARD! Both look like two of my cousins when they were younger and they were really cute.

Both.

BOTH SO CUTE! But we see Merida as a child much longer, sorry Punz both are adorable though

Merida was adorable as a child!

Merida acted more adorable, but Rapunzel was cuter I think..maybe?

They both were so cute ^-^

Both!! So hard to choose, but I had to choose Merida :)

I'm not gonna lie: child Rapunzel is kind of ugly.

Both are adorable, it's a shame Merida grew up to be homely and unattractive.

Cuter and prettier

I agree with MalloMar with the second part of her answer

But Elsa and Anna beat them both. I never thought Rapunzel was cute as a child. I agree with Silverrose1991. Child Rapunzel looks kind of ugly and she sounds like a boy when she sings.

Both are cute :)