I don't know about the English dub, but in Japanese, yes, he is.Erwin's VA is the same as Jotaro Kujo from Jojo? Or have I read that somewhere wrong... :S
Also, Eren's VA is Kôichi's, Zeke's is Dio's, and Floch (sp?)'s is Giorno's.
(If we include video games, Levi's VA has also voiced Rohan, and Hans' VA has also voiced Kôichi and Giorno. That's off the top of my head, there might be more.)