Obito was fairly tall, proof of a picture.

[Forest]

Obito is taller than kakashi here, as an artist that knows a thing or two about perspective i say that the closer a given object or person is to the camera or observer the taller they will appear. In this case we see obito standing behind kakashi. His eye and shoulder level are above kakashis slightly, even though kakashi stands closer in perspective of the image. Ths leads me to believe obito is anywhere from 2-3 inches taller than kakashi or around 6 cm. and we all know kakashi is a tall guy and was fairly mature from an early age. Leading me to,suspect obito to be fairly tall as well. As for minato I can not agree because he is sitting down clearly lol

 

[Ultimate Sage Power]

I think minato is sitting on something

I agree maybe he's sitting on orochimaru's lap.

 

[rai shado]

Obito was actually older than Kakashi, who graduated from the academy at a young age.

 

[InfinityBlaze]

Man, kakashi's hair is weird

 

[Ero sennin jiraiya]

Majority of the manga pages i read with obito don't make him look much taller, if any, than kakashi. Minato is definitely sitting on something there too.

 

[supino]

well, here is a shot of them walking (first panel), unfortunately the ground is slopping downward but not too much, it's good to give you an idea of their heights

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and here you can see in the second panel they are all standing close, maybe Obito is a little taller but not all that much

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[Honest Criminal]

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Obito is definatly taller than Kakashi. So, yeah... He's already pretty tall for his age.

 

[supino]

^^ yay! good find!

he was a little taller, not too much.

 

[Altaneen]

Minato is not very tall. Too lazy to go get it atm, but go look at when he met Naruto, they're about the same height.

 

[Memoria]

Minato is not very tall. Too lazy to go get it atm, but go look at when he met Naruto, they're about the same height.

But that was in part-II, Naruto was already 16, and this thread is talking about Obito when he was 13...