Who are all the johto gym leaders?

Question

How many gym leaders can you fight in HG/SS, and who are they?

Answer 1

There are 16 gym leaders for you to face. 8 in the johto region, and 8 in kanto.

Johto
____
Falkner-Flying
Bugzy-Bug
whitney-Normal
Morty-Ghost
Chuck-Fighting
Jasmine-Steel
Pryce-Ice
Clair-Dragon

Kanto
__
Brock-rock
Misty-Water
Lt. Surge- electric
Erika-Grass
Janine-poison
Sabrina-Psychic
Blaine-Fire
Blue-Mixed

hope this helps.