how many summons are there.

because i found like ten already.

Well, theirs (SPOILERS ON WHICH SUMMONS THERE ARE IN GAME) :
(Im sorry if the spoiler thingy doesnt work, im new)





Odin
Pheonix
Bahamut
Neo Bahamut
Bahamut ZERO
Knights of the Round
Alexander
Hades
The Wind One ( :) I forgot its name)
Ramuh
Choco/Mog
Carbuncle, I think
Titan
Ifrit
Shiva
Leviathan
Kjata
Master Summon



Im pretty sure I missed some, but that equals to about 18 summons

I think you got them all. But Carbuncle isn't in FF7.

No, Carbuncle isn't one. And "The Wind One" is Typoon.

And just so newbies don't get confused: that list is in no particular order.

master summon isnt really a summon though i suppose it is red materia.
(gives you all summons if ya dont know)

Ok heres the Whole list (Spoiler):

Chocobo/Mob(also Fat Chocobo once in a while)
Ramuh
Shiva
Ifrit
Titan
Hades
Typoon
Alexander(i think)
Bahamut
Neo Bahamut
Bahamut Zero
Odin
Kutaja
Leviathan
Phoenix
BEST ONE
Knights of The Round
and i think thats it. So that about 16. Still got along way to go man.

And now THAT list...is in no particular order, either. But it's right.

EDIT: Although it's "Kjata" not "Kutaja."