Poke Ball
This Poke Ball can be used to catch wild Pokemon.
How to Obtain You can buy this Poke Ball for 200 at Poke Marts once Brendan / May give you Poke Balls in Littleroot Town.
Great Ball
This Poke Ball can be used to give a higher catch rate to a Pokemon in comparison to a normal Poke Ball.
How to Obtain You can buy this Poke Ball for 600 at Poke Marts once you have acquired the first Gym Batch.
Ultra Ball
This Poke Ball can be used to give a higher catch rate to a Pokemon in comparison to a normal Great Ball.
How to Obtain You can buy this Poke Ball for 1200 at Poke Marts once you have acquired the first Gym Batch.
Master Ball
This Poke Ball can be used for catch each and every wild Pokemon you come across.
How to Obtain In Pokemon Omega Ruby, you can get this from Team Magma Hideout B3F or in Pokemon Alpha Sapphire from the Team Aqua Hideout B3F.
Premier Ball
This Poke Ball is a celebratory token for some event.
How to Obtain You can get this one if you buy at least 10 Poke Balls together.
Dive Ball
This Poke Ball is highly useful in catching underwater Pokemon.
How to Obtain You can buy this Poke Ball for 1000 from Fallarbor Town Poke Mart.
Dusk Ball
This Poke Ball highly aids catching wild Pokemon between 8:00PM and 3:59AM as well as from caves.
How to Obtain You can buy this Poke Ball for 1000 from Fallarbor Town Poke Mart.
Heal Ball
If you catch Pokemon with this Poke Ball it will restore its HP and also fix all the status conditions.
How to Obtain You can buy this Poke Ball for 300 from Verdanturf Town Poke Mart.
Luxury Ball
How to Obtain You can buy this Poke Ball for 1000 from Verdanturf Town Poke Mart.
Nest Ball
How to Obtain You can buy this Poke Ball for 1000 from Verdanturf Town Poke Mart.
Net Ball
How to Obtain You can buy this Poke Ball for 1000 from Rustboro Town Poke Mart once you have talked to the Scientist and opened the Rusturf Tunnel.
Quick Ball
How to Obtain You can buy this Poke Ball for 1000 from Fallarbor Town Poke Mart.
Repeat Ball
How to Obtain You can buy this Poke Ball for 1000 from Rustboro Town Poke Mart once you have talked to the Scientist and opened the Rusturf Tunnel.
Timer Ball
As you keep taking more turns, this Poke Ball will continue getting more effective.
How to Obtain You can buy this Poke Ball for 1000 from Rustboro Town Poke Mart once you have talked to the Scientist and opened the Rusturf Tunnel. - Direct Excerpt from
http://segmentnext.com/2014/11/27/pokemon-omega-ruby-and-alpha-sapphire-poke-balls-locations-guide/
