Istishia
- The Water Lord, King of the Water Elementals
- Faerûnian Major Powers: Akadi | Bane | Chauntea | Cyric | Grumbar | Istishia | Kelemvor | Kossuth | Lathander | Mystra | Oghma | Shar | Silvanus | Sune | Talos | Tempus | Tyr | Ubtao
| Aliases: | {{{Deity Aliases}}} |
| Gender: | {{{Deity Gender}}} |
| Demonym: | {{{Deity Demonym}}} |
| Power Level: | Greater deity |
| Symbol: | Cresting wave |
| Alignment: | Neutral |
| Portfolio: | Elemental water, purification |
| Worshipers: | Bards, elemental archons (water), sailors, travelers |
| Domains: | Destruction, Ocean[1], Storm[1], Travel, Water |
| Arelith worshippers' alignments[2]: | NG, LN, N, CN, NE |
| Aspects: | {{{Deity Aspect1}}}, {{{Deity Aspect2}}} |