One of my pet peeves with the otherwise excellent 5th Edition of D&D is the dearth of clerical domains to choose from. At this point I’m going to work within the constraints of the rules and assign the current domains to the gods of Greyhawk.
The People of Oerth worship many gods. Only deities of the Flanaess are listed here. In general, the greater gods are too far removed from the world to have much to do with humanity, and while they are worshiped, few people hold them as patrons.
These deities have been known to intercede directly in the affairs of men, but only if these affairs have a direct and crucial bearing upon the concerns of the deity. Even so, the annals of the historians list only a few such instances in the history of the Flanaess. Deities have weighty affairs to attend to, and in general they cannot be bothered with the trivial needs of a party of lowly mortals. However, under certain circumstances, a demi-god and a godling might well become embroiled in human affairs – as your further reading will discover. Because of the plots of Iuz and various demons and evil elementals, St. Cuthbert has become actively aware of events (and has indirect assistance from Beory, who resists elemental destruction). The enmity between Iuz and St. Cuthbert may yet result in direct confrontation.
A list of the greater, intermediate, lesser, and active demigod deities of the Flanaess is given hereafter. Following the name of each deity is the culture or cultures associated with that god: Baklunish (B), Common (C), Flan (F), Oeridian (O), Olman (L), and Suloise (S).
The careful reader will note that certain deities are both of a certain racial origin and common, at the same time. Next, the major attributes of the deity are listed and, finally, the deity’s alignment is shown. With respect to alignment, the following abbreviations are used: L = Lawful, G = Good, N = Neutral, C = Chaotic, E = Evil. The deity’s sex is indicated last.
HUMAN GODS
| Greater Gods | Cultures | Spheres | Alignment | Gender | Symbol |
| Beory, goddess of nature | FC | Nature | N | F | Green Disk |
| Boccob, god of magic | C | Knowledge | N | M | Eye with pentagram |
| Incabulos, god of plague and famine | C | Death | NE | M | Reptilian eye with a horizontal diamond |
| Istus, goddess of fate and destiny | Bc | Knowledge | N | F | Weaver’s spindle with three strands |
| Nerull, the reaper | FC | Death | NE | M | Skull with a scythe or sickle |
| Pelor, god of the sun and healing | FC | Life, Light | NG | M | Sun |
| Rao, god of peace and reason | FC | Knowledge | LG | M | White heart |
| Intermediate Gods | Cultures | Spheres | Alignment | Gender | Symbol |
| Celestian, god of stars and wanderers | OC | Knowledge | N | M | Arc of seven stars inside a circle |
| Cyndor, god of time and infinity | C | Knowledge | LN | M | Infinity symbol |
| Ehlonna, goddess of woodlands | C | Life, Nature | NG | F | Unicorn horn |
| Erythnul, god of envy and slaughter | OC | War | CE | M | Blood drop |
| Fharlanghn, god of horizons and travel | OC | Knowledge, Trickery | NG | M | Circle crossed by horizon line |
| Heironeous, god of chivalry and valor | OC | War | LG | M | Lightning bolt |
| Hextor, god of war and discord | OC | War | LE | M | Six arrows fanned out downward |
| Kord, god of strength and athletics | S | Tempest, War | CG | M | Four spears and maces forming a star |
| Lendor, god of time and tedium | S | Knowledge | LN | M | Crescent moon over a full moon with stars |
| Obad-Hai, god of nature | FC | Nature | N | M | Oak leaf and acorn |
| Olidammara, god of revelry | C | Trickery | CN | M | Laughing mask |
| Pholtus, god of light and law | OC | Light | LG | M | Sun or moon partially eclipsed by a moon |
| Procan, god of oceans and sailing | OC | Knowledge, Tempest | CN | M | Trident above a creating wave |
| Ralishaz, god of ill luck | C | Trickery | CN | M | Three bone fate-casting sticks |
| Saint Cuthbert, god of common sense | C | Knowledge | LN | M | Circle at the center of a starburst of lines |
| Tharizdun, god of eternal darkness | C | Trickery | CE | M | Dark spiral or inverted ziggurat |
| Trithereon, god of liberty and retribution | C | War | CG | M | Triskelion |
| Ulaa, goddess of hills and mountains | C | Life, War | LG | F | Mountain with a circle at its heart |
| Wee Jas, goddess of death and magic | S | Death, Magic | LN | F | Red skull in front of a fireball |
| Zilchus, god of money and influence | OC | Knowledge, Trickery | LN | M | Hand clutching a bag of gold |
| Lesser Gods | Cultures | Domains | Alignment | Gender | Symbol |
| Allitur, god of ethics | Fc | Knowledge | LG | M | Pair of clasped hands |
| Altroa, goddess of spring and renewal | Oc | Life, Nature | NG | F | Kara tree full of ripe fruit |
| Beltar, goddess of malice and caves | S | Trickery | CE | F | Set of fangs set to bite |
| Berei, goddess of farmers and home | Fc | Life, Nature | NG | F | Sheaf of wheat stalks |
| Bleredd, god of mines and smiths | C | Knowledge | N | M | Hammer and anvil or iron mule |
| Bralm, goddess of insects and industry | Sc | Knowledge | N | F | Wasp |
| Dalt, god of portals and enclosures | c | Trickery | CG | M | Locked door with a skeleton key beneath |
| Delleb, god of reason and intellect | O | Knowledge | LG | M | Open book |
| Fortubo, god of mountains and mines | S | Knowledge | LG | M | Warhammer |
| Geshtai, goddess of fresh water | Bc | Nature | N | F | Waterspout |
| Jascar, god of hills and mountains | S | Nature | LG | M | Snow-capped mountain peak |
| Joramy, goddess or wrath and volcanoes | C | War | N | F | Volcano |
| Kurell, god of thievery and jealousy | O | Trickery | CN | M | Hand holding a broken coin |
| Lirr, goddess of the arts | C | Knowledge | CG | F | Illustrated book |
| Llerg, god of beasts and strength | S | Nature, War | CN | M | Bear, snake, or alligator |
| Lydia, goddess of music and daylight | Sc | Knowledge, Light | NG | F | Open hand radiating colors |
| Myhriss, goddess of love and beauty | C | Trickery | NG | F | Lovebird |
| Mouqol, god of trade and ventures | B | Knowledge | N | M | Set of scale and weights |
| Norebo, god of luck and risks | S | Trickery | CN | M | Pair of eight-sided dice |
| Osprem, goddess of water voyages | S | Knowledge, Tempest | LN | F | Whale |
| Phaulkon, god of wind and clouds | S | Tempest, War | CG | M | Winged human silhouette |
| Phyton, god of beauty and nature | S | Nature | CG | M | Scimitar and oak tree |
| Pyremius, god of fire and poison | S | Death, Trickery | NE | M | Demon head with bat wings |
| Raxivort, god of rats, bats, and xvarts | O | Trickery | CE | M | Fiery blue hand |
| Sotillon, goddess of summer and ease | Oc | Life | CG | F | Orange tiger |
| Syrul, goddess of lies | S | Trickery | NE | F | Forked tongue |
| Telchur, god of winter and cold | Oc | Tempest | CN | M | Field of snow |
| Velnius, god of sky and weather | O | Tempest | N (NG) | M | Bird perching upon a cloud |
| Wenta, goddess of the autumn harvest | Oc | Knowledge | CG | F | Mug of beer |
| Xan Yae, goddess of shadows | BC | Trickery | N | F | Black lotus blossom |
| Xerbo, god of the sea and business | S | Knowledge | N | M | Dragon turtle |
| Zodal, god of mercy and hope | FC | Life | NG | M | Hand partially wrapped in cloth |
| Demigods and Quasi-Deities | Cultures | Domains | Alignment | Gender | Symbol |
| Al’Akbar, demigod of duty and dignity | B | Knowledge | LG | M | Chalice and 8-pointed star |
| Chitza-Atlan, demigod of death | L | Death | NE | M | Mummified centaur |
| Daern, hero-deity of fortifications | C | War | N | F | Shield |
| Daoud, hero-deity of humility and clarity | B | Knowledge | N | M | Patch of multi-color yarn |
| Heward, hero-god of bards and music | C | Knowledge, Trickery | NG | M | Any musical instrument |
| Iuz, god of pain and oppression | FC | Death | CE | M | Grinning human skull |
| Johydee, hero-goddess of espionage | O | Trickery | NG | F | Stylized onyx mask |
| Kelanen, hero-deity of swordplay | C | War | N | M | Nine swords forming a star |
| Keoghtom, hero-god of exploration | OC | Knowledge | NG | M | Round disk bisected with arrows |
| Kyuss, demigod of undeath and corruption | FC | Death | NE | M | Skull erupting with green worms |
| Merikka, demigoddess of farming | OF | Knowledge, Nature | CG | F | Basket of grain and long scroll |
| Myrlund, hero-god of magical technology | O | Knowledge | LG | M | Six-pointed star with rounded points |
| Rudd, goddess of luck and competition | OC | Trickery | CN | F | Bulls-eye target |
| Tlazoteotl, Oerth Mother | L | Life, Nature | N | F | Ear of corn |
| Vecna, god of evil secrets | FC | Knowledge | NE | M | Hand with an eye in the palm |
| Vinar “The Green Man”, god of growth and abundance | OF | Nature | CN | M | Green-leaf mask |
| Wastri, god of bigotry, amphibians, and self-deception | C | War | LN | M | Gray toad |
| Zagyg, god of eccentricity and magic | C | Knowledge | CN | M | Two, parallel ziggurat shapes |
| Zuoken, god of mental and physical mastery | Bc | Knowledge | N | M | Striking fist |
Demihuman worshipers of Greyhawk’s gods:
- Bleredd, Fortubo, Jascar, and Ulaa are commonly worshipped by dwarves.
- Ehlonna and Obad-Hai are commonly worshipped by elves.
- Ehlonna, Fortubo, Jascar, Obad-Hai, and Ulaa are commonly worshipped by gnomes.
- Ehlonna, Obad-Hai, and Ulaa are commonly worshipped by halflings.
Coming soon, demihuman deities!
From the Sorcerer's Scroll 
Shouldn’t Osprem have the Tempest Domain?
I guess she could. As a goddess of water voyages, I pegged her as more of a travel goddess than a weather one. Looking back at Dragon 90, where she was first introduced, I definitely think she should have the Tempest domain.
I’m trying put together my own campaign guide for 5e with bit I’ve scraped up over the years. I’m struggling with the domains at the moment and was hoping that they’d be listed here but I can’t either see them or they aren’t listed. Any chance you could lend me a hand? I added the Death, Grave, Forge and Order domains to add additional flavor to my own but some just don’t seem to fit well.
I’m curious as to why you gave the Knowledge domain to Wenta? The brewing aspect? I’m currently playing as one of her cleric’s in “Ghosts of Saltmarsh” and settled on the Life domain due to alcohol’s connection with medicine, as well as brewing and harvests’ connections with community; I made this choice against Nature which seemed (to me) to represent the rawer aspects of the natural world, from locations like forests and mountains, to fundamental forces like the weather.
(Although if she lives to hit 4th-level, I’ll give her the Magic Initiate feat for a bit of druid flavor).
Life works perfectly with brewing… like the Green Man of myth or John Barleycorn. I went with Knowledge because it seemed a good fit at the time (crafting, to my mind, went well with the Knowledge domain).
My friend wants to play a Good Aligned Grave Domain cleric in my Ghosts of Saltmarsh campaign.
As there are no Grave Domain Deities, we are looking for a compromise. We looked at Berei, perhaps as a warden of a family crypt. Making sure the family rests in peace. I’d allow it, but I thought I’d get a second opinion.
The Grave domain works perfectly for both Wee Jas and Urogalan. Nerull would also have that domain (this post was written before that UA article).
Wee Jas can have good-aligned priests. Urogalan (halfling deity of earth and death) would also work.
If you don’t use the Death or Grave domain, I think any god with Protection, Life, or Good as domains would also work for your friend’s cleric.