Japanese: My Name

I've seen "Thomas" written two ways:

トーマス
and

トマス

is the ー necessary?

Thanks!

 

Depends if you want to be To (like top) -Masu or To (like toe) -Masu.

 

Like Moosey said

I think トマス is closer to the most common pronuciation of Thomas.

Incidentally 'Tom' would be written トム and pronouned Tomu (again with clipped vowel sounds)

 

Agree Holy, thanks to both of you!

 

Both are correct, and the only difference is the length of the 'o'
If the o is short, as with Englih pronunciation, it it without the -
If the o is long, as with the Dutch pronunciation, it is with the -