Norman's Gym is in Petalburg City. If you're asking this question, you are probably preparing to fight him, which means that you have been there before. Remember he gives Wally a pokémon to catch Wally's Ralts
the seventh gym in pokemon sapphire is in mossdeep city.
Slateport City doesn't have a gym.
he is in stooptopolis city
Pokemon platinum is for DS but it is in snowpoint
in the gym in petalburg city
The third gym leader in Pokemon Sapphire is Wattson and he is located in Mauville City.
The fifth gym is in petalburg city
In sapphire, the 5th gym leader is your dad, in that city after Oakdale.
its in fortree city
MOSSDEEP CITY
Peatlburg city
it is on mauville city
fortree city
In Fortree City.
Mossdeep City
the seventh gym in pokemon sapphire is in mossdeep city.
mauville city gym leader wattson