Collin Clive portrayed Henry Frankenstein twice.  First in FRANKENSTEIN.  Then, later, in BRIDE OF FRANKENSTEIN.

 

Most people would say that only one actor portrayed the character.  Except.....

In the film GHOST OF FRANKENSTEIN, Sir Cedric Hardwicke plays Ludwig Frankenstein ( one of Henry's sons ) and at one point in that movie the "ghost" of his father appears to him!  It isn't clear whether this is actually the spirit of Henry Frankenstein or whether it's simply Ludwig's over-active imagination that leads him to think he's actually seeing his father.... but, nonetheless...  So, brief as it may be, Henry Frankenstein makes one last appearance in the classic Universal series - this time portayed by Cedric Hardwicke!

So, that would actually make 2 Henry Frankensteins.

- GJS

P.S.  I looked for a Pic to include but, couldn't find one.