Ring of Animal Friendship (RING03)
Location(s) [TotL] Castle Maluradek Dungeon (Level Four) - Found in chest
Ring of Aura Transfusion (URING4C)
Location(s) Upper Dorn's Deep (Tiers of the Dead) - Loot from one of the tombs
Ring of Dwarven Bone (DBONE)
Location(s) Severed Hand (Level Two) - Loot from the Orc Shaman
Ring of Free Action (RING09)
Location(s) Kuldahar - Loot from Orrick the Grey if you choose to slay him [HoW] Lonelywood - Loot from Varglann, one of the men looking for Kieran [HoW] Lonelywood - Loot from Purvis
Ring of Greater Resistance (URING5A)
Location(s) Lower Dorn's Deep (Malavon's Lab) - Random loot from Malavon's throne
Ring of Protection +2 (RING07)
Location(s) Wyrm's Tooth (Frost Giant Caverns) - Loot from Kontik the mage of Auril [HoW] Barbarian Camp - Found in barrel
Ring of Reckless Action (URING4A)
Location(s) Upper Dorn's Deep (Tiers of the Dead) - Random loot from tomb
Ring of Sanctuary (SRING)
Location(s) Severed Hand (Elven Priest Tower) - Random Item
Ring of Shadows (SHADOWS)
Location(s) Vale of Shadows (Black Wolf Temple) - Loot from Myrkul's Sending
Ring of Strength (URING3B)
Location(s) Severed Hand (Elven Priest Tower) - Random loot