"Wow" usually works quite effectively.
One could say "Crikey", as Steve Irwin did, but that would be rather unnatural. The average Australian rarely says "Crikey" anymore.
WOW!
Wipe Out waste South Australia
people say its ffdasdaf but i do not know wow wow wow wow wow wow wow wow
Girum dinq = "Wow"
you can say either anda or caramba for wow
it is honey got some boobies like wow oh wow
All I can say is "Wow!". My dog "Bow" has a middle name, and that is "wow".
Wa sei! ...or at least that's how I say wow in Chinese.
Vau or vov(wow, like in English)
"wow, tu es jolie"
oh, wow ! or just "wow"
You could say "guau, ¡eso es tan genial!"